This entry level cover has the strength and durability of covers costing twice as much. Rugged polyethylene scrim and coating means this cover can withstand winter s worst. Arctic Armor covers are protected so they will last for years in direct sunlight. The cover s black underside and heat sealed seams means a crystal clear pool next spring. The big four foot overlap ensures a proper fit and helps the cover from stretching and ripping like covers with three foot overlaps.