The Mega-Tuffie is 13″ in diameter. This toy is great for large breed dogs that are hard on their toys. It works great as a Frisbee or can be used as a tug toy. Great for flyball training — soft edges won’t hurt teeth or gums. This toy is for the dog that deserves nothing but the best! Vet Recommended and Approved! Ultimate Construction: Each toy is made with three layers of industrial grade nylon and 1 layer of soft fleece on the outside. All of the layers are sewn together to make one super strong layer of material. Each toy is sewn together with 2 layers of cross stitching and then 2 layers of linear stitching. After the toy is sewn together an additional piece of black nylon trim is added to cover the four rows of stitching. This extra piece of nylon is sewn with 3 linear stitches to give the product a total of 7 seams. That is one well built toy!