Designed for training, hunting, tracking, scent work, and barn hunts, these 3/8" Biothane long lines deliver reliable performance in any condition. The non-porous material resists odor absorption and stands up to moisture without degradation. Waterproof and built to last, they clean effortlessly with soap, water, or disinfectant wipes. Constructed from premium Biothane Beta 520 Super Heavy material for maximum durability and control.