DETAILS No more “did my dog just swallow that?!” The BullySafe offers peace of mind by promoting proper chewing, making each treat safer (and longer lasting) for your pup. It’s crafted from tough, non-toxic nylon to withstand even the most serious chewers, so pups can enjoy their chews without the risk of choking or swallowing big pieces. The easy-to-use, adjustable design fits chews of all sizes, and it’s a perfect fit with all-natural Woof Collagen Chews! HOW TO USE  Unscrew it, drop in a Bully Stick or other chew, and screw it closed securely to extend playtime and decrease the risk of choking on loose chews.