TIGHT WOVEN FABRIC: Our canvas tarps are made from loomstate heavy duty 12 oz. numbered duck fabric which is Grade "A" Premium Double Filled or "Plied Yarn" of industrial grade which creates a tighter weave construction and smoother texture than single fill cotton ducks. The tight dense weave make the tarps stiffer and more durable for outdoor applications. The waxed treated tarps makes them waterproof. | HEAVY DUTY: Our four season premium quality canvas tarpaulins are sturdy designed and constructed to perform in all weather conditions. The cotton canvas tarps will not self-destruct and rot away as all seams and hems are double stitched with heavy duty, rot resistant thread and are going to last a long time. Prevent water to seep in, evaporate moisture preventing Rot/Rust on objects, keep your valuables dry and allows a little airflow for drying out the dampness and humidity. | MULTIPLE SIZES: Our Tarps come in several sizes: 6x8 7x9 8x10 10x12 12x16 16x20 20x20 and more. We use stainless steel rustproof grommets spaced approximately 2.5-3 feet apart all around and in each corner allowing the tarps to be tied down and secured in a robust manner no matter how big a size. They are reinforced with extremely durable patches at every grommet placement and corners using poly-vinyl triangles for greater durability. | MULTI-FUNCTIONAL FEATURES: There are polypropylene loops on every grommet to insert rope for All Round Tensioning, also, for quick easy tie-down. These loops reduces wear on tarp, will prevent grommet pull-out due to high winds or extreme strapping conditions and extend the life of your tarp. Also, there are reflective tape at corners that will provide a high visibility warning especially during night time that will help mark out potentially dangerous or hazardous areas. | MULTI-PURPOSE USE: These are four season heavy duty tarps for everyday use as it provides protection against heavy rain and UV rays or wherever you need to keep valuables covered, can withstand the elements outdoors. These canvas tarps are heavy-duty and perfect for Agriculture, Machinery, Industrial, Commercial, Construction, Home, Outdoor Applications and endless uses. These tarps are not intended for cars (autos), boats or highway use.