Highland Tarp Straps feature metal S-hooks that wont bend or break under normal use. Straps are constructed of high-quality black Ethylene Propylene Diene Monomer (EPDM) rubber thats both UV- and ozone-resistant. Straps wont rot or lose stretchability due to weathering. Available in different lengths for a variety of applications. Imported. Lengths: 9, 15, 21, 31. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.