Tarpaflex has a NEW limited run of Eco-friendly Canvas Tarps made of 100% cotton, single-filled, duck fabric. Our Canvas Tarps are heavy duty 16 oz. per sq ft after wax treatment, seams double-row stitched, hems double stitched with heavy duty brass grommets every 3 feet.A traditional style 100% cotton canvas tarp made from single filled cotton duck canvas. Each tarp is wax processed to make the cover very water resistant. Seams on all the canvas tarpaulins are 1" double row stitched and the hems are 1.5" with edges folded inside and double row stitched. Rust resistant brass eyelets are every 3ft Please note that due to this being a natural cotton fabric, the tarp may shrink under extreme heat.Super Heavy 16oz Tan Canvas Tarps - Strong Cotton Duck Canvas16.0 oz. Per Square Yrd