Our inground covers have sewn seams reinforced perimeter binding with water bag loops for easy installation. Our above-ground covers have sewn seams and reinforced perimeter binding with high grade nylon webbing loops. Above-ground covers come with a domestic made wire/winch combo to ensure easy installation. Standard poly covers come in blue or tan. Woven poly winter covers for inground and above-ground applications. Imported covers come in green or blue.