BioThane Decker or Sawbuck Pack Saddle Breast Collar Tree Straps.Made with US produced BioThane Beta. BioThane Beta is a PVC coated polyester webbing, making it strong (1000 pounds of tensile strength), durable, easy to maintain (wash with soap and water, no oiling), wont stretch, and will remain flexible, won’t freeze even in the harshest of conditions. These Straps are meant to be Screwed to the rear your Decker or Sawbuck Pack Saddle, then continue to attach to the roller buckles on your Spider Pad. They are 1 inch X 4.5 inches, and have a dee ring riveted in. They come in your choice of Black or Brown, your choice of dee ring Solid brass, stainless steel, brass plate, or nickel plate. Also included are two 1 inch Saddle Screws and washers in Solid Brass or Stainless Steel to match your dee ring selection.