Thank you for looking! The following is quoted from the sales site. SRT Long Lead 20m Yellow Round Rope Lightweight Floats Untangles Medium to Large Dogs Elastic Training Lead Long Leash A long lead with a sturdy round rope that is difficult to tangle, allowing your dog to play freely. Recommended for training such as obedience, and also for river play as it is made of lightweight material that floats on water. [Specifications] Use: Lead for medium to large dogs. Total length: approx. 20m. Rope diameter: approx. 8mm. Weight: approx. 450g (including carabiner). Renewed in July 2017 based on customer feedback. [Improvement 1] The heavy snap hook, which was at risk of coming off, has been replaced with a lightweight carabiner with a locking mechanism. [Improvement 2] Durability has been improved by covering the rope stitching with a rubber cover. The round rope has moderate cushioning and is flexible, reducing the burden on your dog. It is difficult to tangle and easy to wind up, unlike flat webbing that tangles and becomes a mess. It is compact, making it easy to carry, store, and clean. It is also made of lightweight material that floats on water, making it recommended for river play. To eliminate the connection point, which is the weakest part of a snap hook, we have adopted a locking carabiner with no connection point. Since a long lead allows the dog to get far away from the owner, it would be a disaster if it came off. This carabiner locks securely, so you can rest assured. *With a long lead, tangling is minimal as the dog repeatedly moves back and forth in a straight line. ▼Note▼ If you tighten the carabiner lock too much, it may be difficult to unlock. Please be careful not to overtighten the lock. *This listing is for a beautiful/new old stock item. Although I have checked it, as it is a home-stored item, there is a possibility of unnoticeable minor deterioration even for new, unused items. Thank you for your understanding. If there is any defect, please contact me via transaction message before confirming receipt. ☆Immediate purchase welcome ☆Scheduled to be shipped via Mercari便 ☆Please understand that the times when I can check and reply to comments vary from day to day.