The Winter Cover Seal is a simple solution to wind getting under your winter cover and causing damage and premature wear and tear Winter Cover Seal is a unique blend of tough poly blend film that wraps around your pool to seal out winter gusts The secret to Cover Seal is a special blend of resins that enables this unique material to stretch and hold tightly over a long period of time even during extreme cold weather Cover Seal is also packed with U V inhibitors so that the sun will not weaken it Since Winter Cover Seal creates an airtight seal your pool water will be crystal clear next spring and you can expect a longer life from your winter cover One box of Cover Seal will wrap around a 24 ft round above ground pool six times Features . Prevents wind from getting under and damaging. Your winter cover Stretches and holds tightly for a long period of time. Airtight seal for clear water in the spring Specifications . Size 15 in x 500 ft