The collar is designed to prevent strangulation accidents. Dogs collars can get snagged on so many things; fences, decks, kennels, crates, bushes, floor grates- even other dog's teeth. The KeepSafe patented break-away safety buckle prevents strangulation accidents by releasing when pressure is applied to the buckle. It can be used securely with a leash by bastening the leash to the two D rings.
I have ordered from your many times and generally have been very pleased. However, several times, including this time, the item I ordered has been backordered. So far, for a month, I wish Entirely Pets would indicate whether an item is in stock before I place my order.