The Touring double is compatible with all of our leashes and bungees, transforming them into a Y-leash. The longarmson Touring double straighten the angle so that the dogs harness maintains a centered load. Touring double comes in two sizes. Small with ultra-light and secure screw-lock carabiners. Medium with rotating Twistlock carabiners, these have an automatic lock assuring that your dogs does not get loose. Size Medium: Rotating twistlock carabiners rated to 300kg Size Small: Screw-lock carabiners rated to 300kg Weight: Small: 54 grams, Medium: 101 grams Length: Small: 50 cm, Medium: 72 cm Width: Small: 13 mm, Medium: 23 mm