❤SOFT SMOOTH & BREATHABLE BAMBOO：Made of Eco-friendly & Natural Bamboo,this combination with polyester creates an Ultra Soft fabric with moisture wicking function.These Protectors are relatively more cooling,softer than cotton terry surface ones. We add Polyster to make the bamboo fabric more durable than pure bamboo.Provides a cooling effect that distributes heat evenly and regulates body temperature.[Please do not compare the price with cheap protectors since quality is totally different.]❤100% WATERPROOF & NOISELESS: SGS CERTI Back TPU,which is PVC, Phthalate & Vinyl-free.They are designed to be an invisible waterproof barrier to protect your expensive mattress.They effectively repels all liquids, including accidental spills, bodily fluids like sweat or urine, thus making a clean,healthy sleeping environment.They are silent and will not make plastic sound when you move on your bed.❤NEW 3D AIR FABRIC:The filling of Meritlife Mattress Cover Protector surface is 3D Air Fabric, which only allows air in, but repel liquids. So it make your bed more breathable,soomth and soft, does not change the feel of your mattress.❤18 INCH POCKET FITS NICELY：Twin (Single) Size measures:39"*75",Twin XL Size:39"*80",Full size:54"*75", Queen size mattress protector:60"x80",King Size:78"*80",California King Size:72"*84".Fitted Sheet Style,All size fit up to 8"-21",Our 18 inch deep pocket is designed for all types of mattresses including memory foam, latex or spring.The highly elastic skirt is made of mesh fabric and has excellent ductility to accommodate mattress of various thicknesses to prevent the mattress from moving.❤CUSTOMER SERVICE & WASHING INSTRUCTION: We provide 30-day Return/Replacement Service.If you are not satisfied FOR ANY REASON, Pls contact our Customer Support and we will do everything to make you 100% satisfied.Machine wash cold separately on gentle/delicate cycle.Tumble dry on low.Do not bleach.Do not dry clean.We suggest you buy 2 pieces or more, so you can change one while wash the other.