Protect your winter cover from wind damage with winter cover seal, a simple and effective solution. The poly film wraps around your pool to seal out winter gusts, preventing wind from getting underneath and causing damage and premature wear to your above-ground pool or winter cover. The unique blend of resins allows the material to stretch and hold tightly, even in extreme cold weather. Integrated U.V. inhibitors ensure the sun won't weaken the material. By creating an airtight seal, winter cover seal keeps your pool water crystal clear for the next spring and extends the life of your winter cover. One box of cover seal contains 500-ft of material. Multiple boxes may be needed for large pools.