This is a set of two Petio Charmant Chouchou cat collars. They fit neck sizes from 17 to 24cm and feature a safety design that releases when strong force is applied. They also have reflective material and a bell, which is helpful for nighttime walks and knowing where your cat is. [Brand] Petio [Product Name] Charmant Chouchou [Target] Cats [Neck Size] 17-24cm [Features] Safety design, reflective material, bell [Colors] Red stripe, Blue stripe [Condition] Unused, but stored at home. Thank you. Notes: Only the blue collar was removed from its base to measure the length (it has not been used).