The Red Dingo Hypno Blue Collars are adjustable, practical and convenient for all dog owners. Available in three different widths, and 3 different sizes. Each Red Dingo Dog Collar is made with premium nylon webbing, solid stainless steel D-rings and Red Dingo's trademarked buckle bone side release buckle. These Collars are perfectly designed to match with all Red Dingo Dog Tags, making them a perfect match!