... system;2, Special use of super-elastic balancing net and few springs;3, Multi-zone design to distribute body ... pressure effectively, offer you a healthy and comfortable sleep.4, deluxe brocade and knitting fabrics are used, high-density activated sponge ... four airholes to keep inside dry and ventilated.6, Double sides fabrics quilting, thick padding, pretty and fashionable design;7, Empty inner ...