Innovation Sensory Chewy Bricks With 3 different texture (bumps, ribbed and smooth) can keep your child clam, soothe sore gums, improve concentration. Designed for all children with mindful of oral and motor stimulation needs and those with Autism/ ADHD etc Is there an age limit? No. Ours will work for any age. T teether made of 100% premium food grade silicone, it's absolutely tough and soft. Can help baby to pass teething or give an aggressive chewer a pleasant experience. Is this BPA-free? Absolutely! Ours chewy sensory toys offer a safe, non-toxic surface for developing chewing & biting. In addition, do not contain Latex, Lead, Phthalates. Colours are all passed test by lab. Extra Tough for Aggressive Chewer Made of 100% food grade silicone to meet durability. All material meets all required standards and free of BPA/ Lead/ Latex/ Phthalates/ PVC. Can help baby to pass teething or give an aggressive chewer a pleasant experience