Why Dogs Love It Made with polyester and fleece, this Mighty® toy combines a soft exterior with durability-focused internal construction. Up to two layers, four rows of stitching, and flexible seam protection help reinforce vulnerable areas. The Junior measures 5.1" x 3.3" x 7.8", while the Regular measures 6.6" x 3.9" x 11.0". Both sizes feature two squeakers and a DuraScale™ rating of 7.