Load Circumference Min - Max:12"= 4.3in - 9.4in (10.7cm - 23.7cm)15"= 5.5in - 12.5in (14cm - 31.7cm)20"= 5.1in - 17.1in (13cm - 43.5cm)These Voile StrapsA(R) are made of tough stretch polyurethane, with a UV-resistant additive to increase their lifespan.Their Super Tough nylon buckle is non-marring, non-conductive, and non-reflective.On the job, in the outdoors, and everywhere in between: they are the reliable way to secure, bundle, and repair almost anything on the go. Over the last 30 years they have become the ultimate alternative to duct tape, nylon straps, and bungee cords. When an expedition goes awry, the Voile Strap becomes much more than simply useful: it becomes the most essential tool in your kit.No matter where you&';re going, no matter how ambitious the journey, and no matter your method of travel, there is an ever-growing arsenal of time tested, weather immune, and damn-near indestructible Voile Straps ready to keep your kit dialed... and perhaps even save the day when other tech fails.a Non-Marring: Avoids scratching to preserve sensitive surfaces.a Non-Reflective: More discrete than the standard aluminum buckle.a Non-Conductive: The preferred choice for electrical contractors.a Won&';t Slip: Textured "rubber" strap provides grip to avoid slipping.a Holds Tight: Strap is semi-elastic, creating tension that tightly secures items.a Super Strong: Sustains heavy loads under dynamic force.a UV Resistant: Endures extended periods of use in direct sunlight.a Works in Extreme Weather: Immune to atmospheric heat and freezing temperatures.a Daisy Chain Together: Can be linked to other straps to create longer operating lengths.a Time-Tested: The original polyurethane tension strap, designed in Utah, USA in 1984. SPECSMaterial: UV-Resistant PolyurethaneBuckle: Super Tough Nylon