Brighter mornings ahead. This 10" mattress from Tuft & Needle adapts to kids' growing bodies and varying positions for a more restful night's sleep. An outer layer of the brand's signature Adaptive® foam responds to their body weight, creating a contoured, pressure-relieving surface, while a firm foam core keeps them well-supported. The medium-firm feel suits both stomach and back sleepers. And kids will stay cool even on warm nights, thanks to the mattress's open-cell construction that encourages airflow.