Playlearn's Original Resistance Therapy Putty for is ideal for hand strengthening and for improving fine motor skills in both children & adults. Putty can be squeezed, stretched, twisted and pulled without fragmenting, separating or getting stuck to the skin. This outer pack contains 5 tubs of 57 grams Therapy Putty in 5 different strengths: Extra soft Soft Soft/Medium Medium Firm Each type can be shaped into stress balls and assist arthritis relief, ergotherapy treatment, and with hand and wrist physio.