The Bark Box Super Chewer Dog Toy in Medium size (20-50lbs) is made of durable rubber material with a fun and engaging design inspired by Peanuts character, Charlie Brown. This chew toy features an unstuffed interior, making it easy to clean and ideal for teething pups. The addition of a squeaker and wobbler element adds an extra level of entertainment for dogs, keeping them entertained and engaged during playtime. Perfect for active dogs looking for a heavy-duty toy to keep them busy and entertained.