GLI Pool Products Liners & GLI In-ground Pool Liners. GLI inground pool liners are 100% virgin vinyl & made in the USA. GLI vinyl pool liners are created using GLI G-Fusion Bonding Technology to create a stronger, less visible seam for our custom-made vinyl liners. GLI pool liners are available in 28 mil & 20 mil thickness in the GLI Destination Series™, GLI Signature Series™ & GLI Signature Plus Series™ Inground Vinyl Liners & Sure-Step™ Textured Step. Atlantic provides ALL current GLI Vinyl Pool Liner patterns for ALL swimming pool sizes. Select a GLI Industries Vinyl Pool Liner size, see all patterns, view GLI Pool Liner Patterns & Videos. Call 855-205-7139 our Authorized GLI Pool Liner experts for help with selection, measuring & ordering your GLI Pool Liner today.