Lick, Love, Wag Collars Made of nonporous polymers, these collars are waterproof, dirtproof, and stinkproof. These beautiful collars colors won't wear out or fade. The buckles have been made to be especially thick for durability. The large and medium collars have been reinforced with nylon lanyard on the inside of the rubber. This prevents them stretching from a dog that likes to pull ****A SIZING NOTE ON SMALL COLLARS The small collars will fit a very small neck sizes. HOWEVER, on sizes smaller than 11", there is a good deal of excess collar after feeding through the d ring. These collars are perfect for puppies that will grow into them. They may not fit extremely small toy breeds well.