We took our industry leading Tuff Ball® and combined it with our premium cotton rope, Twisted Chews, and the result was the excellent Twisted Chews Cotton Rope Tug with 2.5” Tuff Ball. Tuff Balls have super thick natural rubber walls for extra durability and better bounce. Twisted Chews are made with 100% cotton rope, and are colored in blue and yellow. Blue is the darkest color dogs can see and yellow is the lightest, so these toys create a great contrast for your dog to spot the toy.