<!--ProdInc[600017595]/Mall:[potterybarnkids_US]--> The Simmons Deep Sleep mattress is designed to give little ones a restful night''s sleep. It provides cooling comfort, sink-free support and the ultimate pressure relief so they sleep deeply all night long. HOW IT IS CONSTRUCTED * INNERSPRING mattress support that allows children to change positions more easily throughout the night. * Comfort foam that meets the desired level of plushness to firmness, your child needs. DETAILS THAT MATTER * COOLING COMFORT: Cushy AirCool foam enables airflow through the mattress for cool, breathable sleep. * ULTIMATE PRESSURE RELIEF: Select models feature soft gel foam that helps them sleep cool and supported, so their cradled throughout the night. * Pillow Top features energy foam that provides ready, steady support. * SINK-FREE SUPPORT: 800 individually wrapped coils helps them be cool and comfortable, plus control motion between two sleepers. * Whether reading, scrolling, or snoozing, the supportive foam base layer provides lasting support. KEY PRODUCT POINTS * Low-VOC foam is certified to CertiPUR-US standards, which ensures it is made without PBDEs, TDCPP or TCEP (“Tris”) flame retardants, ozone depleters, heavy metals, formaldehyde, and phthalates regulated by the Consumer Product Safety Commission. * 10-year limited manufacturer''s warranty. * Dimensions & Care DIMENSIONS Twin * Firm: 38'' wide x 74.5'' long x 10.5'' high * Firm Weight: 56.25 lbs * Plush: 38'' wide x 74.5'' long x 11'' high * Plush Weight: 53 lbs * Medium: 38'' wide x 74.5'' long x 12'' high * Medium Weight: 60 lbs Twin XL * Firm: 39'' wide x 79.5'' long x 10.5'' high * Firm Weight: 60 lbs * Pl <img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=potterybarnkids&ProdInc=600017595&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px''>