Ultimate Freedom: Ultra-Light Hands-Free Dog Leash with Adjustable Options. Enjoy total freedom on every walk, run, or hike with our ultra-light, hands-free dog leash — designed for active lifestyles. The size S leash is suitable for small/medium dogs. The size L leash is suitable for medium/large dogs. Available in 2 sizes (S/M, M/L) Matching collar or harness available Please take the time to measure your dog to find the best size using the size guide. SIZE GUIDE We advise measuring your dog's neck before purchasing a new collar to make sure you get the perfect fit. Using a soft measuring tape, measure their neck at the widest point leaving space for two fingers to fit between the tape and the neck so it's not too tight. If your dog is between sizes, we suggest going up a size. SIZE CHART LEASHES LENGTH WIDTH S 200 CM 2 CM L 200 CM 2,5 CM