If you are looking for a retractable leash then the Flexi brand is known for fashion, design, function and quality. Millions of happy dog owners around the globe are using a unique innovation from Germany: The Flexi retractable dog leash. This is not surprising as the name Flexi stands for the most enjoyable walk for both pet owner and their best friend. The flexi one-hand braking system helps you restrain your dog. The Flexi Giant Series - A 26 ft belt leash, stands out because of its sturdiness and is suitable for very large dogs. Giant L for dogs up to 110 lbs. and Giant XL for particularly large and strong dogs - no specified weight limit.