Inner structure adopt high quality steel spring combine with natural latex, parallel tactic spring, support whole body weight equality. Relieves the force on human bodies. Add germproof natural latex, with more elasticity.Both of them are perfect combination, Improves blood circulation while sleeping and reduce the feeling of tiredness and pains. Natural latex with super elasticity, Can make users sleep in the same position longer time and reduce the unnecessary turning .If you want to sleep with more firm feeling, please overturn the mattress to opposite side, Inner material support environmental protection, emanate the human bodys excrescent heat and damp. Keep a perfect sleeping constant temperature environment. Multifunction design, soft and hard combine moderately. Come into a natural air condition system, bring the convection, filtrate and clear air,as if you are staying in nature.