GPC Winter Covers 8821AB 18' Bound Round Above Ground Winter CoverThis 18' round bound winter cover is built to protect above ground residential pools during the harshest winter months. Made from polyethylene material, it is designed to be cold resistant and long lasting throughout the winter season. Its bound edge construction enhances durability and provides a more secure, reinforced finish around the perimeter. The snug fit ensures the cover remains in place, shielding your pool from snow, leaves, and other