Description Therapy Putty, Perfect for rehabilitation, physical or occupational therapy, therapy putty is used for strengthening the hand muscles, improving fine motor skills and relieving stress. Variable stretch resistance putty can be squeezed, pinched, stretched and twisted to effectively work the hand muscles. Feature - Color: As shown.- Material: Silicone.- Size: About 7.5 x 7.5 x 4.5cm.- Composed of an odorless and safe silicone, the putty is durable and able to withstand extensive use.- Gradually increase hand and grip strength with four distinct levels of resistance putty varying from extra to firm.- The yellow putty is rated as extra soft, the red putty is soft, the green is medium and the blue putty is rated as firm.- Variable stretch resistance putty can be squeezed, pinched, stretched and twisted to effectively work the hand muscles- Perfect for rehabilitation, physical or occupational therapy, therapy putty is used for strengthening the hand muscles, improving fine motor skills and relieving stress.Packing list: 4 x Discovery Putty