ARK’s RoboChew™ Sensory Chew Necklace is sure to put a smile on your face! At 2.5" tall, .7" wide at the feet, and .5" thick, this chewable robot pendant is a great option for those who prefer chewing with their pre-molars and/or front teeth. It features lots of tactile ribs and bumps for extra sensory input through texture.