Costway 8" King Size Memory Foam Bed Mattress Medium Firm Breathable Pressure Relieve

Optimal Internal Structure: The 8" thick mattress comes in a 4-layer interior construction including memory foam, soft foam and high-density foam. Tender memory foam helps relieve physical pressure while high-density foam stably supports your whole body.|| Breathable Mattress Cover: The entire surface is covered with 100% poly stretch fabric with superb breathability which can help regulate the sleeping climate. With outstanding softness, the frictions between your skin and the mattress cover will be eased, so that you can enjoy a more pleasurable sleeping.|| Safe & Harmless Design: Our memory foam bed mattress has been certified by CertiPUR-US. Therefore, it is free from any harmful chemicals and unpleasant odors. Both the elderly and children can enjoy a healthy and high-quality sleep on our medium-firm mattress.|| Practical Bed Mattress: Our mattress presents versatile applications. It is appropriate for a wide variety of bed frames, such as a bunk bed, slatted platform, flat platform bed, etc. Meanwhile, apart from being placed in home, you can also use it in dormitory, apartment, etc.|| Mattress In A Box : The shipping dimension is 42" x 17" x 17". Inside the package, it is a rolled up mattress. All you need to do is unroll the mattress and place it on the bed frame. After 72-hour recovery, the mattress will get to its original shape. Note: Please keep distance and enough space from the mattress when opening.