The 7 Best Twin Mattresses for When Your Little One Is Ready for a Grown-Up Bed
Standout picks for every type of sleeper.
Published Sep 11, 2021 12:40 AM
Moving your little one out of their crib and into their first big kid bed may be a fraught and confusing time for both child and parent alike. (No! Don’t grow up!) But adjusting to this major life stage can be fun and manageable with the right setup. A twin mattress may feel considerably larger than what your babe is used to, but simply placed on the floor or on a low bed frame to begin with, it will quickly become a size that your child gets used to and will continue to grow into. Behold, our guide to finding the best twin mattress to help ensure a good night’s sleep is in the near future—for all involved.
- Best overall: Saatva Youth Mattress
- Best long-term value: Nectar Memory Foam Mattress
- Best for young sleepers: Five Little Monkeys Sleep System
- Best support for tall kids: Casper Original Hybrid Mattress
- Best for bunk beds: Purple Kids Mattress
- Best for flip-floppers: Tuft & Needle Original Mattress
- Best organic: Naturepedic Verse Mattress
A Few Things to Keep in Mind
Mattress material: In terms of how mattresses are made, we’ve really come a long way. Using natural and hypoallergenic materials has thankfully become the norm, with many brands boasting eco and material certifications, so that everyone can rest easy. While innerspring mattresses are the most traditional and affordable and known for their bounce factor, today’s modern memory foam mattresses offer a host of benefits. Some designs are infused with gel (which helps to regulate body temperature while offering ergonomic support), exhibit open-cell structures for added breathability, and feature multiple layers of foam in different densities that help avoid that sinking quicksand feel. Hybrid mattresses, which combine both springs and foam, offer the best of both worlds. Ready to jump in yet?
Thickness: Apart from a thicker mattress being more supportive and hence more comfortable, mattress height should be a key consideration if you are planning to fit a bed frame, trundle platform, or bunk bed. Most bunk beds can only safely accommodate low-profile mattresses—the sweet spot tends to be between 7 or 8 inches high—and kids mattresses can run from 6 inches (thin) to 12 inches (lofty), so be sure to do your due diligence and match the mattress height to the depth of your selected bed frame.
Firmness level: Unsurprisingly, mattresses with a medium firmness will suit growing children best. Because children weigh much less than adults, soft mattresses will probably feel more comfortable to them. However, as they mature, a firmer one will provide more support and pressure relief if they ever experience growing pains. If you’re planning to use the same mattress as your child hurtles toward their teenage years, a medium-firm option will see you through.
Trial period: Most brands now boast generous trial periods to help ensure your child is happy with your purchase. One hundred nights risk-free has become the norm among both leading and niche brands, with some companies going beyond this, like Saatva, which offers a 180-night trial, and Nectar, which provides a one-year trial period. Make full use of that time to figure out if the chosen mattress is right for your family. Returns are often hassle-free, and some companies like Casper and Tuft & Needle will donate mattresses returned within the time period to charity or communities in need.
Warranty: A long warranty period usually indicates that the mattress is of superior quality. Ten-year warranties have become a great benchmark across the board, with Nectar offering a whopping lifetime warranty that covers most physical flaws and defects as long as it has been used and maintained properly. Most mattresses are thankfully built to last, and a solid warranty period is a good indication that the materials match what’s described on the label.
Our Top Picks
Best Overall: Saatva Youth Mattress
Best Long-Term Value: Nectar Memory Foam Mattress
Best for Young Sleepers: Five Little Monkeys Sleep System
Best Support for Tall Kids: Casper Original Hybrid Mattress
Best for Bunk Beds: Purple Kids Mattress
Best for Flip-Floppers: Tuft & Needle Original Mattress
Best Organic Kids’ Mattress: Naturepedic 2-in-1 Organic Mattress
Q: What are the dimensions of a twin mattress?
A typical twin mattress measures 38 inches wide and 75 inches long. A twin XL offers a little more length at 80 inches. Both mattresses range between 6 inches and 12 inches in height, so make sure to check the dimensions of your bed frame, trundle, or bunk bed before pulling the trigger.
Q: Do two twin mattresses make a king?
Almost. Two twin mattresses form the width of a typical king, but they fall a little short in length. Choose two twin XL mattresses to form a true king—they’ll fit your king-size bed frame perfectly.
Q: Do I need to use a box spring with a twin mattress?
No. As long as you have a foundation for your mattress, like a slatted bed frame or a platform bed, this will help prolong the longevity and integrity of your mattress.
How We Vetted These Products
Every product in a Domino guide meets these criteria:
- They blend form and function. We believe the best-designed products reflect your personal style and are a joy to use.
- They’re expert approved. In addition to our team of editors, we tap a range of designers, makers, renovators, and all-around knowledgeable people to share their intel.
- They’re endorsed by people who actually own them. We pay close attention to real reviews to know that they pass the test IRL.
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