Dual-comfort, dual-firmness. The STARLIGHT natural latex mattress boasts a dual-firmness-dual-comfort feature, being essentially two mattresses in one. Flipping the mattress over will vary the firmness of the mattress from a medium to a firm rating, allowing your child to choose the firmness of the mattress while growing. • Firmness: Two in one firmness - Medium or Firm• Thickness: 14cm (5.5”)• Dual-firmness-dual-comfort feature, being essentially two mattresses in one, allowing your child to choose the firmness of the mattress while growing.• The thickness of this mattress makes it the perfect choice for bunk beds, usually with safety height requirement of 15 cm or below for the top bunk.• Oekotex® and Eurolatex certified natural latex, toxic-free with no formaldehyde.• No off-gassing of noxious fumes.• Mattress Cover: Coolmax® with HeiQ Swiss Advanced Cooling Technology, Adaptive®.• Adaptive® offers superior moisture regulation for a hygiene and comfortable sleep.• Easy removable cover with zip that that can be washed at 40°C.• 10-year limited warranty against latex sagging. • Mattress comes with Adaptive®-Coolmax® cover.• Each latex layer is well protected with inner cotton cover.• Coolmax® is using an unique moisture management system to keep you cool and dry all night.• The Adaptive® treatment helps to increase the rate of evaporation and reducing humidity greatly.• Adaptive® is a Swiss-based HeiQ’s intelligent textile technology, which transforms the mattress cover into a dynamic textile that responds to the sleeper’s needs.