Ideal for developing hand muscle strength, tone and endurance, Putty can be squeezed, stretched, pinched or twisted to simulate muscle tone and movement, Size colours differentiate the varying degrees of resistance, Clear non-toxic material does not separate or adhere to skin, Available in 4 weights and 6 resistance levels[{'Item': 'Therapy Putty'}, {'Type': 'Medium'}, {'Brand': 'Sammons Preston'}, {'Density': 'Medium'}, {'Unit Weight (g)': '85'}, {'Economic Order Quantity': '1'}]