Our poly bags are very tough and stand the the test of time. These bags are made from heavy-duty polyethylene tarp material. The poly tarp bags are great for weighing down a tarp tent or sand bag piling.Our poly bags are very tough and stand the the test of time. These bags are made from heavy-duty polyethylene tarp material. The poly tarp bags are great for weighing down a tarp tent or sand bag piling....Show More