Hartz makes durable products every time including the Hartz Dog Toys model 90444 Run N Romp toy. This is made to be played with and chewed on by dogs to keep them active and entertained. These stuffed dog toys are made from durable canvas on the outside a soft polyester filling on the inside that s pleasant to chew and a squeaker for added fun. Your dog can chew on them run around with them or even play tug of war or fetch them for even more fun. Keep your best friend active and playful with Hartz Dog Toys.