Hydra Pools IG LNR FUSION HD 28/ELE BLU 20 ELE Blue Fusion HD 28/20 Mil Inground Liner with 16' x 40' x 24" Radius Standard Specs. It's the most important part of your pool -- the part you'll see every day for the rest of your life. That's why we pay so much attention to the quality of Hydra Vinyl Pool Liners. We know your pool liner has to do more than just look good through years of sun, water, chlorine, ultraviolet light, heat and cold, as well as everyday wear. So while many pool liners are warranted for ten years or less, ours is warranted for a full 20 years, on a prorated basis.