Lupine's 1/2” wide Cat Safety collars feature a custom designed breakaway buckle with a release point of about 4.5 lbs. pressure. Jacquard woven nylon. In one size range, adjustable 8”-12”. The D-ring has a bell, and provides a place to attach ID tags. This collar is for ID purposes only. Due to the breakaway buckle, it cannot be used for leash-walking. Machine wash, warm water, mild soap (no bleach or bleach alternative). Air dry.