Welcome to Puppylove whelping identification collars. Our whelping collars are made of genuine soft One Wrap Velcro Tape that is made in the USA (not the imitation tape that is made in China or Taiwan). These Puppy collars are 3/8" wide and 8" long. Our collars are easy to secure by attaching the hook side of the Velcro to the loop side and are easily adjusted. When we have a litter we check our collars daily and adjust as needed. This listing is for the 14 colors listed.