Flexi Classic Tape Dog Lead. The Flexi Classic is a modern ergonomic design, has a comfortable braking system, perfected tape guidance system. Tape Sizes5m 15kg (16ft 33lbs) Small5m 25kg (16ft 55lbs) Medium5m 50kg (16ft 110lbs) Large Easily customised with a multi box and LED lighting system, chromed snap hook reduces the risk of rust.