With 5D Snow Down Alternative,Double Border Pillow Top Construction?this hotel quality bed topper will transform your mattress from ordinary to unparalleled comfort and supreme softness Encased in 40% of the smoothest, silky soft breathable bamboo fabric, our mattress topper is designed to deliver excellent ventilation and evenly distributes heat Our elasticated deep pocket will wrap tightly around your mattress and accommodates depths from 8-21 inches. ensure your mattress topper will remain securely in place Be it sweat or stains, you will never get them out of memory foam topper or expensive mattress. This mattress topper will take care of them all. If it gets dirty, just throw it into a commercial washing machine, it will come out plush and clean after washing and drying. No expensive dry cleaning necessary.Economical and sustainable Please leave it several hours before use or just put it in a dryer machine for fluffier. We provide100% satisfaction after sale service, if there is anything wrong with your order, just feel free to contact us, we will make every effort to solve your problem Twin: (38" x 75") Twin XL: (38" x 80") Full: (54" x 75") Queen (60" x 80") Short Queen(60" x 75") King: (78" x 80") California King: (72" x 84")