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Kids’ Bedroom Design Ideas: Mattress Edition

by Angela Maple

rainbow colors in kids bedroom

Whether you are decorating your nursery for your new bundle of joy or giving your kid’s bedroom a complete makeover, an essential component of your child’s new bedroom design is finding the best mattress for your little ones. So, as you are browsing kids’ bedroom ideas on Pinterest to match your baby’s interest in ducks, space, the sea, or their favorite color, don’t forget to search for the best mattress for kids no matter their age.

Whether you have found the perfect theme for your kid’s bedroom or still searching, let us help you find the best mattress to send your little one off to dreamland with our guide. Read further for more details.

At a Glance:

Best Types of Mattresses for Kids

Kids Mattress Sizes

Kids Mattress Shopping List

Kids Mattress FAQs

Why Trust Us?

Mattress Guide Overview

Are you still browsing online for inspiration for kids’ bedroom design ideas to decorate for your infant or preschooler, or just revamping your pre-teen or teenager’s bedroom? It’s an absolute must to find a proper mattress for a good night’s sleep so they can continue to wake up refreshed and healthy. Below we’ll take a look at all things kid-related, mattress edition: everything from types and sizes to what to look for in a mattress, and other things to buy for your little snickerdoodle’s new bed.

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Best Types of Mattresses for Kids

mattress store

Hybrid: These types of mattresses are a combination of steel coil support systems and foams (gel, memory, or latex) that provide sleepers with a well-balanced blend of firmness and comfort. Hybrids are ideal mattress choices for children five years old and under.

Innerspring: These traditional mattresses use a coil/spring system and padded layers or upholstery materials (foams, fiber, and smaller springs) to provide excellent support surrounded by comfortable layering. A tried-and-true go-to mattress type for kids of any age.

Memory Foam: A specialty mattress that is adaptive and durable, memory foam uses high-density polyurethane foam as a support system between the upholstery layers, creating a “sinking” effect as the foam contours to a sleeper’s shape and position for a cradling sensation. Memory foam mattresses are a superb choice for school-age children seven years old and up.

See How They Compare: Memory Foam VS Hybrid

Kids Mattress Sizes

When it comes to finding your child the right size kid mattress, mattress dimensions are a great place to start.

Crib: An infant will be spending most of their time on a mattress since babies sleep an average of 14 to 15 hours a day. So, safety and comfort will be your top priorities when looking for a crib mattress. As you are looking for types of mattresses, innerspring and foam are the two main categories, but organic has been growing in popularity and is the most expensive option of the three.

What to Consider:

  • Sizing: As set by the Consumer Product Safety Commission (CPSC), the legal size of a crib mattress should at least be 27.25” x 51.25” with a thickness no greater than six inches. Also, per CPSC guidelines, make sure there are no gaps between the mattress and crib larger than one inch to prevent potential safety hazards.
  • Weight: If you choose an innerspring mattress for your newborn’s crib, the coils will make it weigh close to 15–30 pounds. While a foam mattress is much lighter, weighing no more than eight pounds unless it’s polyurethane foam, which can weigh as much as 20 pounds.
  • Venting: It’s crucial to purchase a crib mattress that provides proper airflow, allowing the baby to breathe easily.
  • Certifications: Besides comfort, safety is a huge factor when picking out crib mattresses for your little one, so when you are purchasing one, it must meet the standards of the US CPSC and the American Society for Testing and Materials.

Crib Mattress Dimensions: 28” x 52”

Age Range: Birth–two years old

Toddler: Your child is now ready to transition from a crib to a toddler or “big kid’s” bed. Toddler beds typically sit low to the floor and include a low or partial railing to keep your child from rolling out of bed as they move around to get comfortable. The rails of toddler beds also give your growing beansprout a sense of security they’d get from their crib as they get used to their new bed. Your toddler won’t need a mattress as firm as when they were sleeping in a crib. Instead, we recommend a medium to firm comfort level for a good night’s sleep.

What to Consider:

  • Materials: If your toddler has allergies or sensitive skin, be on the look for more all-natural mattresses made with hypoallergenic materials.
  • Edge support: If rails aren’t available for your toddler’s mattress, consider finding a mattress with high-edge support that’ll make it tougher for your child to accidentally fall out of bed. Choose an innerspring or hybrid mattress with thicker coils or high-density foam for the best edge support.
  • Short term: During this stage of childhood, your little one’s mattress will have a shorter lifespan between the sippy cup spills, bed-wetting accidents, and imaginary adventures that lead to jumping on the bed. More often than you might think, you’ll be replacing your kid’s mattress as they grow and develop as a toddler.

Toddler Mattress Dimensions: 28” x 52”

Age Range: Three years old–five years old

Twin: A kid’s twin mattress is the perfect solution if you want to transition your toddler into a kid’s mattress they can grow into as they get older. A twin size mattress is the most common mattress size for toddlers and young children and is a great fit for smaller bodies, giving them space to spread out and move around without fear of your kids outgrowing their bed anytime soon. The best twin mattress for kids would be hybrid or innerspring since both options can provide your child with the best sleep they need.

What to Consider:

  • Growing Pains: This condition happens to children between ages six­–nine, and they typically experience severe muscle cramps and aches at night. For your precious snuggle monkey, sleeping with growing pains can be extremely uncomfortable, and the wrong mattress type and frequent shifting in bed can even worsen the situation. With the help of a supportive mattress that relieves pressure from their lower back and pelvis, these common childhood aches and pains would be less recurrent, and your child can get a more restful sleep  

Twin Mattress Dimensions: 38” x 75”

Age Range: 3 years old– 12 years old

Twin XL: Similar to a twin mattress, a twin XL has a few extra inches in length and more surface area, which is perfect for your teenager since they’ll be going through growth spurts and provides them with more legroom. Additionally, for your baby heading off to college, these mattresses are found in most college dorm beds, so your young adult will already be familiar with them. But be sure that when you buy sheets for this twin XL, grab the twin XL sheets; otherwise, the sheets you purchased won’t fit properly.

What to Consider:

  • Growth Spurts: If your child is in their early teens, you can expect them to go through growth spurts that leave them feeling achy, hot, and uncomfortable, especially at night. So, getting a foam or rubber mattress that is breathable and relieves some of those body aches would be the best solution to help them relax and get a good night’s sleep.
  • Additional Sleep: As your children reach their teens, they will be staying up longer and sleeping in later. To ensure your blossoming night owls get the best sleep, consider getting them a quality mattress that supports their bodies in their preferred sleeping position for a restful slumber.  

Twin XL Mattress Dimensions: 38” x 80”

Age Range: 13 years old and up

Kids Mattress Shopping List

checklist marked with red sharpie

After you find the ideal mattress for your kid’s bedroom, there are some other things to purchase before your bedroom ideas are complete. Below, we have just named a few to put the final touches on your child’s bed.


When searching for a proper foundation for your child’s best sleep, whether a toddler or a teen, it’s important to buy the right one that can support the mattress and won’t have your children struggling to climb into bed.

Mattress Protector

A kids mattress protector will not only add to the comfort of your child’s bed but also allow the mattress to last longer by preventing spills and accidents that could cut its lifespan short. The best mattress protector for kids is a waterproof one that will not only protect your child’s mattress from stains but dust mites too. A low profile foundation and an ultra-low profile foundation for your kid’s bed offer more firm support than a box spring for a hybrid or foam mattress and works for young children and teens of shorter stature. A twin bed foundation is a good choice for a toddler bed since they are close to the floor, so any accidental falls out of the bed won’t hurt as much.


Now that you have gotten the ideal bed for your children or child, it’s time to pick out the bedsheets that fit the theme of their room. Bed sheets can be flat and fitted linens, pillowcases, protectors, shams, or sets with different colors, prints, sizes, and textures.

Kids Mattress FAQs

Q: How long is a twin XL bed?

A: A twin XL mattress is 79.5” long.

Q: What mattress firmness is best for a child?

A: A medium-soft or medium-firm mattress should do the trick for most children, providing a well-balanced level of comfort and spinal support. However, ideally, the best mattress for your child comes down to their individual needs and sleeping preferences. For instance:

Q: Is a memory foam mattress good for a child?
A: Yes, memory foam mattresses are safe and comfortable for school-age children, but we would not recommend getting one for your toddler or infant. Younger children are still developing and need a firmer sleeping surface. A memory foam mattress’s body-contouring properties would make it difficult for them to shift and adjust themselves while sleeping. However, if you have kids under five at home, we do suggest looking into getting them an innerspring or hybrid mattress since it provides them the comfort and support they’ll need as they grow.

Why Trust Mattress Land?

Since 1996, Mattress Land has been making strides in the mattress industry to provide our customers the sleep experience they need — and deserve. We do that by offering the ultimate customer experience, complete with our trained experts, BedFIT™ computerized diagnostics, and our impressive showroom. We’ll make sure that you find the right sleep solution for your sleeping habits so you can feel energized in your day-to-day life.

We are also proud of our diverse, employee-driven culture, where our teams work hard toward a common goal. We know that better sleep makes all the difference, and our commitment to changing the landscape of traditional mattress shopping is how we know Mattress Land is one of the best mattress stores around.

Shop Kid Mattresses at Mattress Land

At Mattress Land, we provide quality name-brand mattresses for great prices. Our sleep experts are always happy to help you search for the best mattresses for kids. With locations throughout California, Idaho, Nevada, and Washington, Mattress Land is bound to have a sleep solution for everyone. More accessible than ever, you can call us at 800-909-9299, visit our website to shop Mattress Land sales, and check out Mattress Land reviews online. Or better yet, stop by one of our showrooms to discover why we are everyone’s favorite local mattress store. Visit us today!

Learn More: How to Wind Down Your Kids for Bedtime