Chewy Tubes are designed to rehabilitate the jaw after surgery, trauma, stroke and radiation treatment. They offer a safe, non-toxic surface for developing biting and chewing skills. Recommended for both kids and adults. Available in 4 different colours each representing a different stem thickness (from thin to thick: yellow, blue, red). The green colour offers a flexible and bumpy surface. Chewy Tubes are free of latex, lead, BPA, PVC and phthalates. Each Chewy Tube is approximately 2.5" wide and 3" long. 7 months to Adult.