White, heavy-duty, flexible plastic lath is an easy, cost-effective way to secure poly to wood rafters, studs, etc. Use scissors to cut the Cinchstrap to size, then stretch it tight over the poly and nail or staple it down. In windy environments it can also be installed under the poly to reduce abrasion caused by flapping against rough wood. Used as a tension strap on quonset greenhouses where the poly is secured only to the bottom perimeter, rather than to rafters. Many other uses for this 1 3/4" high density poly strapping.