👑【CertiPUR US Certification】The high quality foam layer in the king mattress has been certified by CertiPUR US, free of harmful substances, and meets all applicable mandatory and voluntary safety standards for mattress products. The king size mattress provides a safe and effective fiberglass free flame retardant layer around the inner layer. This means there is no skin irritation, no breathing problems, and no health risks for you and your family 🛌【Support Various Sleeping Positions】 This medium firm king mattress uses a combination of high density memory foam and bagged springs. The memory foam will align the spine correctly according to the body shape to relieve stress points. Hybrid mattress can easily adapt to different body types and sleeping positions, ensuring that everyone can enjoy comfortable sleep ✨【Silent Sleep, Sports Isolation】Our king mattress is composed of independent bagged springs and memory foam, which can effectively release pressure, relieve fatigue, and effectively reduce sports transmission. You will not be disturbed by your partner's throwing, turning, or waking up, and you will have a truly peaceful sleep experience throughout the night 🌙【King Mattress in a Box】Our king size mattress is compressed, rolled up, and packaged in one box for easy transportation and installation. When opening the packaging, please maintain a safe distance from the king mattress. After removing the mattress from the packaging, it is recommended to ventilate and shape it within 48-72 hours 🎁【Gift of Fitted Sheet】 We have included a fitted sheet as a gift for you. The matching fitted sheet can keep the king mattress clean, reduce the penetration of stains and physical wear, and avoid premature aging, deformation, or odor generation of the mattress. Fitted sheet can be machine washed and quickly dried, which is much more convenient than cleaning the entire king size mattress. Regular repl acement and cleaning can help maintain a healthy sleeping environment for you queen mattress full memory foam mattress in a box 12 inch queen size mattresses bed mattress king mattress full size mattress queen size mattresses full bed mattres queen mattres in a box hybrid queen mattress colchón twin full size bed king size pillow top mattress innerspring mattress