Congratulations, you’ve made the investment in your backyard sanctuary by selecting the best products in the industry. To protect your investment and offer a layer of safety to your outdoor oasis, be certain to include a GLI Safety Cover. A GLI Safety Cover not only protects your swimming pool from the elements, but more importantly, it acts as an off-season, full-time Lifeguard for your pool, preventing the accidental intrusion of children, pets and/or any unwanted "visitors".