Our Super Firm Mattress is an amazing choice for all back- sleepers as it keeps your feeling, light, breezy, and firmly grounded during all your dreams! Features: Cotton cover – The smooth cotton cover of this mattress ensures a 100% organic weave and holds all your sheets tight and snug. 5-zone pocket spring system – This mattress is inlaid with an amazing 5-zone pocket spring suspension that redistributes all your body weight, making sure to relieve all the pressure off your body. Charcoal infused – The foam of this mattress is infused with charcoal, so it’s got an elevated anti-bacterial, anti-dust mite, and anti-allergen composition! 6-turn coil & individual pocket spring – The 6-turn coil system and individual pocket springs of this mattress provide an excellent cushioning effect that also prevents any future sagging! No harmful additives – This mattress is OEKO-tex and Certipur-US certified, so you can rest assured that it contains NO harmful chemical additives!