Robelle 4 ft. x 8 ft. 1-Pack Premium Pool Pillow for Winterizing Above Ground Pools, Premium Double Seams, .42 MM Thick Vinyl, Easier-to-Use Boston Valve, 4 Reinforced Grommets, 50 ft. Rope

Pool Pillows absorb stress created by ice building up in your pool. As ice expands in your pool the pressure created is exerted onto the pillow instead of the walls of your pool. Ice equalizer pillows are an essential way to protect your pool during the winter. The pillow will pop before the ice damages your pool. Ice Equalizer pillows also reduce the build-up of rain water, leaves and snow on your winter cover. All you have to do is inflate the pillow and place it under your cover during the winter months. Do not overfill the pillow with air, as this can cause the valve to pop out during the winter months (1/2 to 3/4 full is recommended). Smaller equalizer pillows are recommended for round pools and larger equalizer pillows are recommended for oval pools. Using additional pillows will protect your pool if one fails. Using additional pillows may require a larger than expected pool cover size.

• 1-Pack Premium 4 ft. x 8 ft. Pool Pillow for Winterizing Above Ground Pools
• Premium .42 MM Thick Vinyl constructed 163% heavier than industry standard.
• Since 1973 Robelle has been making the best products to close your pool. Use the best pool closing products designed with over 50 years of experience.
• Premium double seams to prevent deflation.
• Easier to use Boston valve.
• 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.
• Includes 4 reinforced grommets and 50 foot rope