EzyDog Neo Collar Wide dog collars are lined with waterproof easy to clean neoprene are a perfect fit for your overgrown pup! Keeps your large dog comfortable and under control with our Wide Neoprene Collars. Wide Neoprene Collar offers the best in comfort, style and durability. These dog collars are 4.5cm wide, and easily disperse more control on those big "kids" with a fantastic look! These large dog collars are great for dog training, especially when paired with an EzyDog training harness and lead.