These super-durable rubber toys greatly extend chew playtime not just by hours, but often by days. Holes on the ends of the Ruffhides allow the treat inside to be smelled but not chewed, which helps engage play. Refill with Himalayan Chew treats. The textured surface is great for teeth and gums. In blue, pink. Sizes: Classic 3" x 3" x 5.5", Super 3.75" x 4" x 7". Super size is ideal for dogs 60 lbs. and up and for agressive chewers. Classic size is for dogs between 25-60 lbs. Toy is 100% FDA-grade rubber and comes with one Himalayan Chew treat. Himalayan Chew treats are made from yak and cows' milk, salt, and lime juice. Dishwasher safe. Made in USA.