9' X 12' Blue 115GSM Multi-Purpose Waterproof Poly Tarp Tent Canopy Cover Camping Ground Sheet 9' X 12' Tarpaulin by CW-Tarps UV treatment: 3% in HDPE fabric and 3% in lamination Packing: Each sheet in a PP simple liner bag Fabric Used: 110 GSM / 3.24 Oz per Square Yard / 4.52mil Finished Product (including coating): 115 GSM / 3.39 Oz per Square Yard / 4.72mil