This newly designed collar is waterproof, stink proof, reflective and light weight. Waterproof collars are ideal to repel dirt and water for active dogs. Standard collars get dirty, retain germs and even smell over time. Say goodbye to dirty collars. If your collar gets dirty simply hand wash with soap and water, wipe it clean and you're set. It'll stand up to tough conditions and retain its brilliant color for years to come. We've added a high visibility reflective stripe to keep your pup visible. You'll also notice the ultra-light weight design.