The Little Green Sheep's Complete Mattress Buying Guide

There are many factors to consider when choosing a mattress for yourself or your little one, and it's certainly not one size fits all! Our mattress buying guide will break it down into simple parts to help you make the best decision for your family.

The most important things to keep in mind are the size, type of mattress, materials, and firmness level – all of which we’ll take you through in detail below. 

Choose the wrong mattress, and you could be setting yourself or your child up for a poor night's sleep, which can affect everything from mood to overall health. (Grumpy child? No, thank you.)

But with the right mattress, you can wake up feeling well-rested, refreshed, and ready to tackle another day of parenting (or causing mischief if you're the little one!). Not to mention, a good mattress can also last you for years, making it a worthwhile investment.

So, let's dive into our Mattress Buying Guide and find the perfect one for you and your family.

Shop the Best Mattresses for Your Family at The Little Green Sheep

At The Little Green Sheep, we take sleep seriously. With mattresses for little ones, growing ones and even adults, we’re the perfect place to sort your family with the best night’s sleep.

We’ve spent years researching and crafting our mattresses, using natural materials to ensure your family is sleeping safely and comfortably. Our range includes every size, from bassinet mattresses to super king mattresses, so we have a mattress for every stage of your family's life.

You can shop our full range below and experience the difference in a mattress from The Little Green Sheep.

Part 1) A Mini-Guide to Mattress Sizes

When buying a mattress, it's super important to make sure it fits right. An ill-fitting mattress can be uncomfortable for adults and downright dangerous for infants and children.

For example, you don't want your child getting their limbs stuck in the gap between the mattress and the bed. That's why it's crucial to have no more than a centimetre gap. Besides checking out the width and length, don't forget about the depth, too.

Most mattresses come in standard sizes, as outlined in the table below.

Mattress Type

Standard Size (Length x Width)

Moses Basket Mattress Size

74cm x 28cm

Cot/Crib Mattress Size

120cm x 60cm

Toddler Mattress Size

140cm x 70cm / 160cm x 70cm

Child Mattress (Single)

190cm x 90cm

Small Double Adult Mattress

190cm x 120cm

Double Adult Mattress

190cm x 135cm

King Adult Mattress

200cm x 150cm

Super King Adult Mattress

200cm x 180cm

Please note these are standard sizes and can differ depending on the manufacturer and bed frame. You should measure your bed prior to purchasing a mattress.

How to Measure Up Your Bed for a Mattress

Usually, the manufacturer of the cot, crib, or bed should have a user guide that includes recommended mattress sizes to help you find compatible mattresses. But if not, you’ll need to measure it yourself. 

Just take three measurements to find out the right mattress size to purchase:

  • Width
  • Length
  • Height of the interior of the crib or bed (depth)

    Moses Basket Mattresses

    Moses baskets are more geared towards newborns and babies in the first few months of their lives. Often seen as a more traditional choice, the use of Moses baskets dates back centuries. They are smaller and portable, which can be a big draw for a lot of parents.

    Some Moses baskets are sold with a mattress, but this is not always the case. 

    If your Moses basket and mattress are to be sold separately, it’s worth purchasing them from the same retailer to ensure they’ll be size-compatible. If in doubt, check the dimensions. 

    • Most standard Moses basket mattresses measure 74cm x 28cm.

    At The Little Green Sheep, we sell both Moses baskets and Moses basket mattresses to make the process quick and simple!

    Cot & Crib Mattresses

    You need to ensure a snug fit when buying a mattress for your baby's cot or crib. The gap between the mattress and the cot or crib should be less than a centimetre to ensure your baby cannot trap their limbs and hurt themselves. 

    Realistically, the manufacturer of your cot should have provided a user guide detailing the size of the mattress you should buy. 

    • The standard size of a crib mattress is 120cm x 60cm.

    Carrycot/Pram Mattresses

    When selecting a pram mattress, there are several factors you should consider to ensure your baby's comfort and safety.

    Firstly, it's crucial to choose a mattress that provides sufficient support, as a firm mattress helps maintain proper spinal alignment for infants. Additionally, the mattress should be breathable to help regulate the baby's temperature and prevent overheating.

    • The size of the carrycot or pram mattress will differ depending on the brand, but most sit within the 80cm x 30cm range.

    To take some of the stress out of buying a mattress for your carry cot or pram, many of our natural mattresses have been designed to fit the most popular brands, such as Joolz, iCandy, Bugaboo, and Silver Cross!


    These mattresses are generally suitable for babies
    from birth until around six months old or until the baby has outgrown the carrycot or pram

    Child Mattresses

    A toddler bed is a stepping stone between a crib and an adult bed. It’s often seen as a milestone in your toddler's life, and it is important to get the cot bed transition right. This means providing support and nurturing your child's physical and psychological needs as they make the change.

    The first thing to consider when purchasing a toddler mattress is the size. 

    • Generally, toddler mattresses measure 140cm x 70cm or 160cm x 70cm, while child mattresses measure 190cm x 90cm. 

    Again, it is imperative that it fits properly to reduce the risk of entrapment and suffocation.

    In addition, toddlers tend to need firmer mattresses to provide their bodies with enough support to keep them comfortable and properly aligned while their growing bodies move around during the night!

    Adult Mattresses

    Choosing a mattress for yourself as an adult will depend on several factors. Your weight, height, build, age, and preferred sleeping position can affect what type of mattress you find more comfortable and suitable.

    Adult beds are available in a range of sizes that correspond with the size of your bed frame.

    • These generally measure from 190cm x 135cm for a double up to 200cm x 180cm for a super king.

    Made-to-Order Mattresses

    Sometimes, you'll find that the bed, cot or crib you've ordered is a little unique. It might be vintage, custom, or simply unusual. If this is the case, you're likely to find that the standard mattress sizes won't work.

    This will mean you’ll need to purchase a custom-made mattress

    At The Little Green Sheep, we're proud to offer this service with our full range of mattresses, and the process of ordering is pretty straightforward. Simply provide us with the measurements of your child or adult bed, and we do the rest.

    Part 2) The Different Types of Mattresses

    After you have an idea of the size you need, the next thing to think about is what material you want for the mattress you are buying. 

    Again, there are several mattress materials to choose from, all of which have their own merits and drawbacks. 

    Each mattress offers different levels of support for the body, too, which is something you’ll need to consider. This is directly linked to the materials, so let's break down your options.

    Type of Mattress

    Key Points

    Organic Mattresses

    • Naturally comfortable
    • Provide healthier sleep
    • Environmentally friendly

    Pocket Spring Mattresses

    • Individualised support
    • High airflow between pockets
    • Helps spinal alignment

    Memory Foam Mattresses

    • Not suitable for babies
    • Pressure relief

    Innerspring Mattresses

    • An affordable choice
    • Responsiveness and bounce

    Hybrid Mattresses

    • Balance of comfort and support
    • Good temperature regulation

    Organic Mattresses

    Organic or natural mattresses are firmer than other options and designed to provide maximum support.

    Organic mattresses can come in several different materials, depending on where you plan to buy them from. There are some natural materials you’re more likely to encounter and some that are unique to certain manufacturers, like the ones below, which make up The Little Green Sheep's organic mattress.

    • Cotton – Super soft, breathable, reduces skin irritation
    • Wool – Hypoallergenic, breathable, temperature regulating, naturally fire retardant
    • Coconut Fibres – Provides support, reduces pressure points
    • Natural Latex/Plant-Based Foam – Binds coconut fibres, provides comfort

    There is a wealth of benefits you get from organic mattresses that you don’t with those made from synthetic materials, like the ones we’ve listed above. If you’re looking for the healthiest and most eco-friendly option, organic mattresses are the way to go.

    Sample

    Pocket Spring Mattresses

    A pocket-sprung mattress is exactly as it sounds. The springs are housed in individual pockets throughout the mattress. This means that the springs work independently of each other, providing support where needed.

    This is also an ideal option for adult double beds, so partners can move around without disturbing the other's sleep!

    Our Pocket Spring Mattresses, like the Super King Natural Mattress, allow you to get a comfortable night’s sleep with medium to firm support. They’re ideal for back, stomach, and combination sleepers! 

    If you can’t decide on the level of support you prefer, our Natural Dual-Sided Pocket Sprung Mattress offers medium and medium-firm support depending on which side you lay on.

    Sample

    Memory Foam Mattresses

    Memory foam mattresses are made from a type of foam that is very dense and firm but also very soft and comfortable. 

    The foam contours to the body, providing support and relieving pressure points and a great deal of support, making them perfect for people who suffer from back pain or other types of pain.

    You can buy memory foam mattresses for adults and children. They’re available in various sizes, including twin, full, queen and king. You can also find memory foam mattresses made specifically for people who suffer from allergies or have other sensitivities.

    However, you should not use memory foam for your baby's mattress, as it may increase the risk of SIDS.

    Innerspring Mattresses

    An innerspring mattress consists of internal springs coupled with an extra layer of foam on top to make the comfort more consistently spread throughout the mattress. This is one of the older mattress designs, often being a little cheaper and providing average support.

    Hybrid Mattresses

    A hybrid mattress combines features of other mattresses to offer a balanced sleep experience. Typically, it has multiple layers made of springs, foam, and latex.

    Springs provide support and durability, foam adds comfort and body contouring, and latex offers responsiveness and breathability. This mix is designed to meet different sleep preferences, providing both support and softness.

    Part 3) Mattresses Firmness Level

    After reviewing the size guide and materials, you should consider the firmness of the mattress. The materials you have chosen can directly impact the firmness of the mattress, so you should think about this.

    The scale ranges from soft to firm.

    Mattress Firmness

    Best For…

    Not Suitable For…

    Soft

    Side sleepers and lighter sleepers

    Babies due to the increased risk of suffocation

    Medium

    Combination sleepers

    Stomach sleepers due to spine misalignment

    Medium-Firm

    Back and combination sleepers

    Side sleepers due to pressure points on the hips and shoulders

    Firm

    Back and stomach sleepers, and babies

    Side sleepers due to pressure points on the hips and shoulders

    Part 4) Mattress Weight

    Mattresses come in different weights, depending on the materials and size. 

    Naturally, smaller mattresses weigh less than bigger ones. Baby mattresses are on the lighter side, and memory foam and innerspring mattresses are usually the least heavy since they're not very dense. 

    Hybrid mattresses are somewhere in the middle and can vary, while latex mattresses typically tip the scales as the heaviest.

    The weight of the mattress matters because it can influence its support, durability, comfort, and ease of movement. Heavier mattresses often provide better support and durability but may be less comfortable and more difficult to move. Lighter mattresses may be more comfortable and easier to move, but may not provide as much support or last as long.

     

    Part 5) Mattress Toppers & Protectors for All-Night Comfort

    Some people might dismiss a mattress protector as an unnecessary expense, but that couldn't be further from the truth! These unsung heroes of sleep hygiene are essential.

    Not only do they extend the life of your mattress by keeping it clean and free from stains and damage, but they also create a protective barrier that can be a game-changer for those with dust-mite allergies or skin irritations.

    Plus, a mattress protector might just save your warranty from potential mishaps. Investing in one is a no-brainer for your peace of mind and quality sleep!

    We recommend our Organic Single Mattress Protector for their first child bed, where accidents may still happen. Alternatively, our Organic Moses Basket/Pram Mattress Protector is ideal for protecting mattresses from spills on the go!

    Part 6) Mattress Safety Standards

    When buying a mattress for yourself or your family, it's crucial to ensure it meets the safety standards set by the right authorities.

    For instance, British Safety Standards establish rules to ensure that the mattress you choose is safe and healthy.

    These standards cover things like how flammable the mattress is, the cleanliness of where it's made and what goes into it. Cot mattresses have even stricter rules to follow. If a product meets these standards, you'll usually see BS or BS EN on the label.

    SIDS (Sudden Infant Death Syndrome)

    SIDs, or cot death, refers to the sudden, unexplained death of a healthy baby. It's rare but important to know about. 

    Don't worry, as the risk to your baby is very low. Most cases happen before six months of age, usually during sleep, hence the term 'cot death'. 

    To lower the risk, always put your baby to sleep on their back on a firm and well-fitted mattress, and be cautious about what's in the crib, like loose bedding and toys.

    Sample

    How to Care for Different Kinds of Mattresses

    Proper care of your mattress is essential for maintaining its comfort and extending its lifespan. We have an entire guide on cleaning mattresses, so you should keep that saved for future reference. 

    But for now, here are some general care instructions for all mattresses:

    1. Rotate Regularly: Rotate your mattress every 3-6 months to ensure even wear, especially if it's not double-sided and can't be flipped.
    2. Use a Mattress Protector: Protect your mattress from stains, allergens, and spills to maintain hygiene and avoid any damage.
    3. Keep it Clean: Vacuum your mattress regularly to remove dust and allergens. Spot-clean any stains immediately with mild soap and water, ensuring it dries completely.
    4. Support It Well: Use a sturdy bed frame or base to prevent sagging and support the mattress evenly throughout.

    Special Care Tips

    • For Memory Foam Mattresses: Avoid long exposure to direct sunlight, as this can damage the foam's integrity. Rotate memory foam mattresses more frequently to prevent indentations.
    • For Latex Mattresses: Latex mattresses are moisture-sensitive, so they should be placed in a well-ventilated room to prevent mould growth. A breathable cover can also extend the life of the latex material.

    How to Safely Dispose of Your Mattress in the UK

    Disposing of a mattress in the UK requires following certain regulations to ensure it is done legally and responsibly. Here are some ways to get rid of your old mattress:

    1. Council Collection Services: Many local councils offer a bulky waste collection service, which usually includes mattresses. Check with your local council for specific details and any applicable fees. Booking in advance is often required.
    2. Charity Donations: If your mattress is still in good condition, consider donating it to a charity. Organisations like the British Heart Foundation and the Salvation Army accept mattresses, which they may resell or pass on to those in need. Before donating, ensure the mattress complies with fire safety regulations.
    3. Retailer Take-back Schemes: Some retailers provide a removal service when delivering your new mattress. They often take the old ones for recycling. Check if your purchase includes this service or if there’s an additional cost.
    4. Recycling Centres: Take your mattress to a household waste recycling centre. Many have facilities specifically for mattress recycling, allowing the materials to be processed and repurposed.
    5. Specialist Recycling Companies: Look for companies that specialise in recycling mattresses. Though they may charge a fee, these services are an environmentally friendly option, as they focus on material recovery to minimise landfill waste.

    By choosing any of these methods, you can ensure your mattress is disposed of in an environmentally conscious manner while adhering to UK legal standards. 

    Always verify any service's waste licences and compliance with legal requirements for waste disposal before proceeding.

    Key Points: What Mattress Should You Buy?

    Adults spend around a third of their lives sleeping. Children sleep for around half of the day, and infants even more than that, clocking around sixteen hours a day of sleep. If that doesn’t highlight the importance of a good mattress, then nothing will. 

    Use our guide to help you find the best mattress for you and your little ones, and be sure to explore our full range of mattresses – you won’t find a better night’s sleep anywhere else.

    FAQs

    Which type of mattress is best?

    This depends entirely on you. For example, your age, weight, height, build and preferred sleeping position can affect the type of mattress you should buy. Do some research to work out what type will be the best for you.

    What thickness of mattress is good?

    Again, this depends entirely on you. Thinner mattresses tend to be better for slimmer people and vice versa. In terms of baby mattresses, the user guide for your baby's cot or crib will recommend a thickness.

    Can mattresses be washed?

    Mattresses can be cleaned. The process involves a cleaning solution, scrubbing the mattresses, 'rinsing' with a clean cloth and allowing the mattress to air dry. Try to avoid saturating the mattress if possible.

    Are cot mattresses breathable?

    It depends on the type of cot mattress; some are, some aren't.

    Are crib mattresses waterproof?

    This, again, depends on the type of mattress. However, even if the crib mattress isn't waterproof, you can purchase a waterproof mattress protector.

    Can baby mattresses be reused?

    You can reuse a baby mattress as long as you deem it to be clean, safe and in a suitable condition to do so.

    How Firm Should a Child's Mattress Be?

    A child’s mattress should be firm to support their growth and development. A firm surface ensures proper spinal alignment and reduces the risk of suffocation for infants. Always check manufacturer recommendations for age and weight to choose the best firmness.

    How Do I Know What Mattress is Best for Me?

    There are really three standout elements to consider when buying a mattress: size, firmness, and type. 

    Size is important because you want to make sure the mattress fits comfortably in your bedroom and can accommodate any sleeping partners. 

    Firmness is a personal preference, but generally speaking, side sleepers will do well with a softer mattress while back and stomach sleepers may prefer something firmer. 

    The type of mattress also plays a role – organic or pocket spring mattresses are our recommendation as they are often more durable and provide better support.

    What Mattress Should I Buy As a Side Sleeper?

    For side sleepers, choose a medium-firm mattress with good pressure relief and support. This combination alleviates shoulder and hip pressure, aligning the spine for a comfortable night's sleep.

    What Mattress Should I Buy As a Back Sleeper?

    For back sleepers, opt for a medium-firm to firm mattress, such as latex or innerspring, that provides adequate spinal alignment and support. These options help maintain back health and ensure a restful night's sleep.

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