TYR Rally Training Strap Color:Black / Red The aquaSketch vellum is made

The aquaSketch vellum is made of a specially treated plastic mylar originally formulated for architectural drafting

and most other brands of underwater cameras that use an internal flash

The hook & loop closure is designed with an extra large

(WxHxD): 83mm x 75

TYR Rally Training Strap Color:Black / Red The aquaSketch vellum is madeTake your conditioning regimen to the next level with the TYR Training Pull Strap. Designed for advanced swim workouts, the LTAS promotes proper body positioning and upper form strength. With a quick release buckle for simple on and off use, the TYR Training Pull Strap can be modified to use around either the ankles or calves.