The Stansport Multipurpose Triage Tarp does it all â ground cloth, boat cover, picnic shelter, and more. This rip-stop polyethylene tarp is laminated on both sides and boasts a rope-reinforced edge. For maximum versatility, heavy-duty, rust-resistant grommets have been added every 3 or 4 feet. At a feather-weight of 3.1 oz., these tarps are light and compact.• Made of durable rip-stop polyethylene that's laminated on both sides• Rope reinforced edges• Heavy-duty rust-resistant grommets every 3 to 4 feet• Waterproof, washable, and shrink-proof• Weight: 3.1 oz.• Cut Size: 16' x 20'• Finished Size: 15'4" x 19'8"• Set of 4 tarps Rope-reinforced edges for strength Heavy-duty, rust-resistant grommets every 3 or 4 feet Weighs only 3.1 oz. | Stansport 16' x 20' Triage Tarps, Set of 4