Oh! So Solid Blue AgaveBuilt with a 3mm rip and fray proof, high strength polyester weave this set is both beautiful and durable. The exquisite rust proof brass buckle and hardware will make this most durable leash and collar you have even owned. Water & Odor proof, you can take it anywhere. If necessary, this set is specifically designed to be used in the rain, snow, or even at the beach. It remains flexibility in cold weather (remains soft & flexible to 20 degrees F).