Hand and arm strengthening - Reflex Putty3pp Putty enhances wrist and finger flexibility, develops hand muscle strength and increases range of motion. Features Soft, airy texture is pleasant to the touch. Since this hand exercise putty is not greasy or sticky, 3pp Putty will not stick to skin and leave no residue. Medium resistance: great for increasing hand strength after injury or for maintaining hand strength. Silicone putty is latex free. Odorless and non-toxic. Will not harden or wear out. Includes instructions with 10 suggested exercises. Made in the USA