Knobby Chewy Q's are fun new exercisers for practicing biting and chewing skills! Pack them in your treatment tool-chest as a delightful alternative tool for young patients and older patients alike. Knobby Chewy Q's are made of the same FDA compliant material as all our Chewy Tubes and offer a safe, non-toxic durable surface for biting and chewing activities. They are latex-free and do not contain PVC or phosphates. Knobby Chewy Q's are solid rather than tubular so they offer a firmer surface for biting. The Knobby Chewy Q is easy to hold and are latex free.