Made of high quality silicone. The material is soft and easy to keep clean,safe and non-toxic, lightweight. Endlessly reusable and washable. Sizing 4.92"x0.59". It helps relax your body and mind, eliminate stress and anxiety! It can prevent the brain degeneration of the elderly and keep the brain active. The Squeeze Sensory Toy are developing children's intelligence, cultivating logical reasoning ability. An excellent choice for kids and adults, these toys can be used as party favors etc..