The 15" No Marr Strap is highly adjustable allowing for the perfect length without the danger of violent recoil like other fastening devices. There is no cracking under outdoor use. The units are made with a UV resistant proprietary process which deters cracking or freying unlike other fastening devices which deteriate when exposed to the sunlight for long periods of time. No Marking - No Worries - The No Marr Straps are constructed out of a formulated plastic that does not mark or scratch. Great for Cars, Trucks, Boats ATV's - Everything. . Color Choices per box - Green, Yellow, Blue, White, Red and Hunter Green. Also Available in Military Green and Desert Sand. Larger quantities over 10000 please request a quote. Sold in Boxes of 25 units per box