These Voile Straps® are made of tough stretch polyurethane, with a UV-resistant additive to increase their lifespan. Their heat-treated aluminum buckle features a slim profile for packing efficiency and extra durability. Voile Straps® have become synonymous with utility. They are like a business card, but better. They are long lasting, infinitely useful, and prized by those who own a hand-full of them.