Back to Back Boat Seat Cover: our covers are expertly designed for back to back boat seats, ensuring an ideal fit for seats measuring approximately 18 x 19 x 19 inches, bottom half covers (19 to 20" wide x 16 to 18" depth), top half (19 to 20" wide x 18 to 19" tall) Easily Cover Old Boat Seats Fast: save time by easily sliding these vinyl seat cover skins over the old with the included elastic straps for temporary fit or staple them behind the seat for a tight permanent fit Comfortable and Durable: made of waterproof polyvinyl chloride, these seat covers offer outstanding comfort, are soft, breathable and not easy to wrinkle; Enjoy long lasting durability designed to withstand the demands of marine environments Universal Fit for Lounge Bench Seats More: designed to replace over old and cracking vinyl from back to back lounge type seats; Can also be applied for many other seat types by pulling material to fit tightly Seat Protection: safeguard your seats from fading, cracking, and daily wear with our covers; They effectively protect against scratches, spills, seawater, dirt, and pet hair, keeping your marine seating pristine and looking new