This is a level 3 challenge to be used in conjunction with the BUSTER Activity Mat (sold separately). This means you can use it in 3 different ways to make the task more challenging. Have fun together with your dog and stimulate your dog mentally. Give your dog more content in everyday life with the BUSTER Activity Mat. With the BUSTER Activity Mat you can give your dog new challenges over and over again and vary the level of difficulty. The Rock 'n Roll is an oblong task with 6 lengthwise pockets for treats. The task is attached to the mat with 2 press studs. The enclosed elastic bands have tabs for the dog to pull off in order to get to the treats. The BUSTER Activity Mat is designed in Denmark by Marianne Haller Vesterholt to play and interact with her miniature schnauzer Ludwig when he got too smart for traditional toys. It is also recommended by dog psychologist Anders Hallgren. This task is made from a durable nylon which is easily cleaned with warm soapy water. Do not tumble dry. Just hang it up to air dry and you're ready for more fun. With the BUSTER Activity Mat you can give your dog new challenges over and over again and vary the level of difficulty.