Whether installing for the first time, or replacing an existing line, SmartLine has your pool covered! The strong and durable material is made of 100% virgin vinyl and comes in many unique and beautiful patterns to turn your swimming pool into its own mini paradise! Be sure to measure your pool size correctly before making any purchase. Liner Knowledge SmartLine liners hold up better than many alternatives thanks to an acrylic coated layer on top of its virgin vinyl. Prevent liner fading due to chemicals or UV rays and keep the vibrant colors of your swimming pool liner. Overlap style is made to drape over the pool wall and is held in place with coping strips. This installation type does not require the presence of a bead receiver. Be sure your environment is suitable before installation! Air temperature should be at least 70-degrees when installing. SmartLine liners come folded to prevent creasing. Lay out in the sun for at least 1-hour prior to installing to ensure the material is able to stretch when adding water. Read more Don't Forget To Protect Your Liner! SmartLine pool liners are very durable, but we suggest protecting your new purchase with a pool pad from Rhino Pad . Rhino Pad is made from a special cloth fiber that is soft and durable. Defend your liner against cuts and punctures from rocks, roots, grass, glass and other harmful debris found on the ground. It will provide a flat base that gives an extra layer of armor for your swimming pool floor bottom prior to liner installation. Read more Sunlight Boulder Swirl Bedrock Rock Island Antilles Dolphin Solid Blue Swirl Bottom Waterfall Swirl Tile Waves of Poseidon Cracked Glass Pacific Ice Size 21' Round 21' Round 21' Round 21' Round 21' Round 21' Round Gauge 20 20 20 20 20 20