ElastaCat Reflective Safety Stretch Collar with Reflective Charm is elasticized to expand and release your cat if entangled. The reflective material and charm provide extra safety. Adjusts up to 10". Completely adjustable, this collar features a buckle that seeks its own hole anywhere in the material. In addition, the reflective strands are woven right into the collar, providing extra protection at night. The reflective charms add safety and style.