Strong, Yet Remarkably Lightweight Seaman Corporation spent five years developing Shelter-Lite® 3213. The result is an incredibly tough, yet lightweight truck tarp fabric. With its strong nylon base fabric and a higher performance PVC coating formula, the new 13 oz. Shelter-Lite delivers the performance of an 18 oz. tarp fabric, yet weighs 28% less when compared to an average lumber tarp. Easy To Handle In Cold Temperatures Due to its strong nylon base fabric, Shelter-Lite delivers easier handling and better cold temperature flexibility. Covering U.S. Fleets For More Than 40 Years Seaman Corporation is the only major tarp fabric supplier that still weaves and coats its fabric in the U.S.A. For decades, Shelter-Rite tarp fabrics have been the choice of more U.S. fleets than any other. 28% Lighter Strength From Nylon Lower Long-Term Costs Fewer Repairs