Planet Dog's second generation Orbee-Tuff® toy--The Bone--is comprised of their same great signature material in a classic bone shape. Orbee-tuff bone is durable, buoyant, and bouncy. It's infused with a minty scent that freshens breath and smells so good it will make YOU want to chew on it! Bones are non-toxic, rinse clean and are Made in the USA. They rank a 3 out of 5 for chompers--please refer to the guide to choose the chew level for your dog. Planet Dog's products are 100% guaranteed. Any time. Every time. XS is 3.5"; S is 5"; M is 6.5"; L is 8".