We all know dogs aren't always polite and some can clear a room in seconds! This Design has Black Trim with Lime Green design that says "Fart Loading 70 %, Please Stand By" along with a green bar progress meter design. 4' Matching Leashes are Available. These collars are Not Lined. Made with Strong Metal Nickel plated Hardware (no plastic) and an extra lightweight d-ring on the side for hanging dog tags! (this is not a chain type martingale).