The Sea to Summit Ultra Sil Nano Tarp Poncho is a 4-in-1 raincoat, backpack cover, groundsheet, and shelter. Lightweight and compact, it's multi-use gear that no adventurer should be without. Made from waterproof 15D Ultra-Sil Nano fabric, the seams are double stitched and tape sealed. The sides snap together for rain protection when used as a poncho, and the three-panel peaked hook and drawcord tail hem provide additional coverage from the elements. A large backpack can be worn underneath, and the tarp can easily become a shelter with the guy line attachment points. The Sea to Summit Ultra Sil Nano Tarp Poncho measures 57 x 104 inches, packs down to 3 x 5.25 inches in the included stuff sack, and weighs 8.1 ounces. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.