Twisters are designed to provide tactile stimulation and improve a user's circulation. This set comes with 3 Twisters. Each one has a different level of resistance to gradually help grasping, twisting and squeezing abilities. The tactile bumps help improve circulation. Bright colors make for increased visual stimulation. Made of a silicone material that can be cleaned with mild soap (avoid harsh detergents and bleach). Non-toxic.
DIMENSIONS: 5.9 inches diameter x 1.2 inches thick.
COLOR: Yellow: soft; green: medium; blue: hard.
WARRANTY/GUARANTEE: As stated by the manufacturer.