Our collar tags are stylish, chew proof and SILENT. They lay flat against the collar and are held in place by an ultra thin Velcro-like fastener molded into the back that opens and closes to go around the collar. Easy to attach to all collars and leashes, even adjustable collars! Available in 2 shapes and 12 colors. Round tag is 7/8". Rectangular tag is 5/8" x 1 1/16". Will ship separately from other items via USPS First Mail - please do not select any other shipping method. Collar sold separately. Please allow 7 business days for delivery.