It is unlike other cold foam mattresses, this mattress is made of 2 layers, 13cm thick high-density foam provides stronger support. It can perfectly support your neck, back and hips. 5 cm gel memory foam is breathable, it sets an ideal temperature for you. The holes on the side make this foam mattress more breathable. This mattress is made of foam and perfectly adapts to your body curve by absorbing the weight distribution of your body. As this can effectively reduce the pressure when you sleep on this mattress, you can support the weight of your body and avoid waist injuries. The unique design allows the mattress to mould into the natural shape of your sleepers and stays cool while you sleep, achieving a balance between firmness and softness. With no-sink support foams, it can adjust and conform to your body for optimal pressure relief. Recommended for back sleepers, you will get back support and enjoy a full night's sleep. The cover of the cold foam mattress has a zipper closure. The outer white mattress cover provides a soft, comfortable feel, while the inner grey mattress cover provides a smooth and cooling feel. You can choose the one you want. And you can easily remove and wash the mattress cover for easy care. You are backed by our 100-night sleep trial and 10-year support without worrying about ordering a mattress online. Our mattress comes compressed and you will receive the mattress in a box that can be easily delivered to your door and fully expanded in your room. Please allow this cold foam mattress 72 hours or more to fully recover, especially for the mattress corner.