About this item Waterproof Thicken Mattress Cover Protector ●WILL NOT MOVE AROUND :The 360° fabric pocket sides easilystretch to fit mattresses up to 4-11.8 inches thick. It will holdtight on all mattress types, whether it's a regular mattress, awaterbed, or memory .It will never slide no matter how you twistand turn in your bed. ●BREATHABLE AND ULTRA SOFT:made of chemical fiber, givessuperior comfort against your skin without extra heat and sweatCompared to the normal diamond quilting seam, this one withnew shape is more supportive and soft. ●HEALTHY SLEEP: Filled with snow down alternative fill, a state-of-the-art fiberfill that has the feel of authentic goose and duckdown without the feathers, poking, the mattress pad can keepyour mattress free of stains,offering sweet nights without runnyeyes or stuffy noses. ●DEEP POCKET & LUXURY SIZE:Deep pocket design effortlesslygrips any mattress 4-11.8 inch, gives a smooth appearance once youapplied. The fabric sides easily stretch to fit mattresses up to 18inches thick.No matter how you move on the bed this pad willkeep neat all the night. no worry of a messy bed anymore,thisquilted mattress pad helps you and your guests rest ascomfortably as possible.OUR GUARANTEE: we want our customers to be100% satisfied - you can always ask us about the product all time.  Size guide: --Please check you mattress size: --width✖length 90x200 cm = 35.43x78.74 inch 100x200 cm = 39.37x78.74 inch 150x200 cm = 59.06x78.74 inch 180x200 cm = 70.87x78.74 inch 200x220 cm = 78.74x86.61 inch --Label: Yes --Material: Polyester fiber  Note:This product is suitable for mattresses with a thickness between 10-30cm = 3.94-11.81inch = 0.33-0.98ft. If you have any questions about the size of the product, please feel free to contact customer service. There may be slight errors in manual measurement, which is normal.