Winter Protection with Steel-Core Fastenings. PREMIUM SAPPHIRE SERIES: With a generous 4-foot overlap, this cover simplifies winterization, making your life easier during the colder months. EXTRA THICK AND SUPER DURABLE: Crafted with top-tier material featuring a 14 × 14 scrim count and a density of 185 GSM, this winter pool cover is designed to keep your pool water uncontaminated until spring.
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