- Waterproof and anti-fouling - The new TPU coated polyester material is more waterproof and anti-fouling than ordinary collars. Collars can easily get dirty when your dog plays on the beach, grass or pool. Don’t worry, just wipe clean with a paper towel or soft cloth, 2.. INNOVATIVE MATERIALS - The inner layer is a sturdy nylon webbing and the outer layer is an innovative coated TPU polyester material to offer your your dog extra durability. It can withstand over 700 pounds of pulling force. 3. Bright Colors - Waterproof dog collars come in a variety of colors allowing you to create a pairing look with your favorite pets. 4. Adjustable Size - The adjustable square ring allows the collar and the dog to fit better. POM synthetic resin plastic steel buckle, easy to wear.