Knobby Q offers a flexible and bumpy surface, perfect for new teeth getting ready to start chewing foods. This stage 2 teether covered with knobs adds just the right amount of sensory input to the teething experience, making it ideal for practicing biting and chewing skills. Teething on the Knobby Q allows baby's mouth to remain open for breathing and sound play! Knobby Qs are made in Maine and like all Chewy Tubes brand products, Knobby Qs are free of latex, lead, BPA, PVC and phthalates. They are easily grasped by little fingers. Knobby Qs are approximately 3" in diameter and 1/2" thick.