Features of the colorful Dingo Energy collar: infinitely adjustable, machine washable, no fear of color loss, seamless construction that prevents irritation to the dog's skin, ideal for both adult dogs and puppies. Available in 5 colors and 5 sizes: click-clack buckle with a comfortable and secure attachment. Available sizes (Width x Total length of the collar (Minimum – maximum neck circumference of the dog)): 1.0 cm x 30 cm (20–28 cm), 1.6 cm x 35 cm (20–32 cm), 2.0 cm x 45 cm (24–39 cm), 2.5 cm x 55 cm (31–49 cm), 3.0 cm x 65 cm (37–61 cm). Colors in which the Energy dog collar is available: Pink, Green, Orange, Mint, Purple.