Shefko TP89UV/10X12 Poly Tarp 10X12 - US Made - Extremely Durable Construction For Heavy Duty And Multipurpose Use - Completely Mildew and Water Proof - Rot Resistant Thread - True Poly polyethylene Highest quality poly tarp construction. Hems are stitched with heavy duty, rot resistant thread and the inner joining seams are heat welded to be completely waterproof. The polyethylene material stays flexible in cold weather, is lightweight, resists tear and punctures, abs is completely water and mildew proof. Proudly made in the USA. Fulfilled by Amazon.