Upgrade your dog's training and outdoor adventures with the ultimate collection of premium, 100% waterproof and odor-proof BioThane® long lines. These handcrafted long lines are completely customizable in 26 vibrant colors and built to give your pup freedom without sacrificing your safety or control. Backed by our lifetime warranty, they are the durable, easy-to-clean solution for recall training, open-field tracking, and stress-free exploration.