2.3kg (5 lb) tub of Blue coloured Mobilis Therapy Putty provides a Firm resistance level for hand exercise and is from the excellent Mobilis Rolyan range of therapy putty, with six different colour-coded densities, all in a variety of sizes and all available in this section of our shop.Mobilis Rolyan therapy putties are clean, non-toxic, non-oily and bleedproof and leave no colour or residue on the user\'s hands after use.The therapy putty will not fragment, separate or stick to the user\'s skin. The range contains six distinct colours which reflect the established standards in resistive exercise, and progress in resistance from super soft tan to extra firm grey. Mobilis Rolyan therapy putty is designed to meet a wide range of strengthening needs and can be squeezed, stretched, twisted or pinched depending on the needs of the individual user.