Cleverly crafted to be both durable and comfortable, the Double Up dog collar adds extra security for dog walking while doubling as a perfect solution for escape artists. Features Introducing the Double Up Collar - A Dog Collar Offering Superior Strength and Flex The EzyDog Double Up Collar offers superior strength and comfort, and can also be used effectively as a dog training collar in conjunction with a harness and/or a leash . EzyDog has found a way to double up on strength while still offering an attractive and durable collar. Whether you need small or large dog collars, the Double Up is an excellent choice. It’s a great travel collar too, reducing the risk of your dog slipping out or breaking free.