Barkbutler x FOFOS cooling bone is the perfect summer chew toy for your dog. There is a catch though, instead of adding peanut butter or a meat stick, all you need to do is fill it with water, place it in the freezer overnight & let playtime begin. The non-toxic, water-based cooling gel inside keeps the bone frozen for hours of fun-filled and chilled joy. Perfect for dogs who tend to overheat during summer & exceptionally hotter days, as well as to soothe teething puppy's sore gums and aid anxious dogs too. Ideal for Medium to Large dogs (10-30kgs). Moderate Chew Toys are more durable than cuddle buddy toys, they are a perfect fit for senior dogs or moderate chewers who like to chew, tug, snuggle & fetch. Not recommended for aggressive chewers.