Tarp 10×30 ft Heavy Duty 12mil 100% Waterproof High Durability Multipurpose,Uv Resistant,White Tarp Suitable for Swimming Pools, Boats, Camping, Courtyards, Etc -by MVPNET. Multi Functional Waterproof Cloth：MVPNET heavy-duty white waterproof tarp has a thickness of 12mil and is made of HDPE material.