Nylabone DuraChew Giant Original Flavor Bones are long lasting, flavor enhanced bones your dog can't resist! Chewing the durable chew bones massages teeth and gums without tooth wear. Helps clean teeth and control tartar and plaque buildup Designed for powerful chewers and satisfies natural urge to chew Made in the USA 7.5" long, for dogs 36-50 lbs 70% of dogs tested showed a significant improvement in dental health when allowed to chew Nylabone at will. Tough Nylabone is endorsed by leading dog authorities like the ASPCA and used by animal hospitals, kennels and humane shelters.