Traditional GSM is 350 Actual GSM is 191.2Waterproof TarpaulineDurable and practicalHigh strength MaterialIt is a perfect sunshelter,easy to use and to operate.Widely using as a car cover,boat covers,machine covers and many other placesIt is rustproof which can be using for a long timeIt can apply in many different kinds of weatherSpecifications:Color: Orange And BlueMaterial: PESize: 18ft*12ftWeight: 3.8 KgTo cover: Car transportation, Open storage, Field Camps, etc.Package Include:18x12ft TarpaulinNotes:1. For Heat sealing there will be 1.5inch less in each side.Thanks for your understanding.Specifications of 350GSM 18x12ft Waterproof Tarpaulin Outdoor Field Camping Tent Cover Canvas Car Cover Canopy SKU 157694487_BD-1088686326VIEW LESS