Take your tarp needs to 'Tarps R Us' - this place has a good variety in medium, heavy and super heavy thicknesses (7-8 to 40 Mil) - pick your poison and price point. https://www.tarpaflex.com/acatalog/Camouflage_Tarps3.html

Disclaimer: no benefit from tarpaflex to me, I bought a special tarp a while back and it came in as ordered; happy customer.