With every purchase, Daisy's Dog Collars donates a portion of the proceeds to animal rescues and shelters. Each collar is made with double braided extra strength cord, custom coconut shell buttons, brown and white cowrie shells. Daisy’s Dog Collars come in 5 sizes with each shell collar adjustable up to 3 inches. Use the size chart to find the appropriate size for your furry companion. Daisy’s Dog Collars can be worn with or without your pet’s current collar.