Long-lasting chew recommended for powerful chewers. Be sure to select the proper chew and size for your dog s particular chewing style. Bristles raised during chewing clean the teeth, and this cleaning action helps reduce plaque and tartar buildup. Nylon, Natural Flavor. Supervise Dog While Chewing For Safety Reasons. Not A Consumable Product. However, Tiny Shavings No Larger Than A Grain Of Rice Should Pass Through Safely. Read Enclosed Guidelines For Use Before Giving To Dog. Size: Regular.