Kruuse Task for Buster Activity Mat, Envelope 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 This task consists of a square envelope which is closed with the stick. The task is attached to the BUSTER Activity Mat by means of the 4 press studs. The dog must then remove the stick in order to solve the task and find a treat 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 youre ready for more fun