Buffalo hide stitched over layers of natural wool felt with heavy cotton jute thread — the same build Tall Tails uses across the natural leather line, and the reason these outlast a plush toy by a wide margin. No toxic chemicals, artificial coloring or fake flavoring in it. 16" and jointed, so it flexes and kicks when a dog shakes it. Tug-tested past 300 lbs of pull and sized for medium and large dogs; not for aggressive chewers. Spot clean only. Worth being clear about: this is a fetch and tug toy, not a chew toy — it is not meant to be left with a dog that grinds, and it should come away once pieces start to separate.