Pool Mate 4 ft. x 8 ft. 3-Pack Classic Pool Pillow for Above Ground Pools

3-Pack Classic 4 ft. x 8 ft. Pool Pillow for Winterizing Above Ground Pools, Classic. 22 MM Thick Vinyl constructed 37% heavier than industry standard. , Since 1999 Pool Mate has been making the best products to close your pool. Use the best pool closing products designed with over 25 years of experience. , Absorbs Pressure Caused By Ice Build Up Under Pool Cover Preventing Damage To Pool Walls. Pool Pillow Will Pop Before Ice Damages Pool Walls. , Forces Debris From The Center Of The Pool To The Sides For Easier Cleaning, Lifts Pool Cover To Prevent Water From Leeching Through Pool Cover, Fill Halfway to Two-Thirds With Air to Prevent Premature Popping. If you have trouble closing the valve please use a hair dryer to loosen before closing.