Lighter weight putty, velvety texture won't stick to skin or under fingernails. Ideal for people who do not like the feel of traditional Theraputty, and require putty for gentle hand strengthening exercises. Maintains even resistance while pinching and squeezing. Air Putty is latex free.Average 60cc - recommended for small to average size hand. Large 90cc - recommended for large size hands. Click here for our Putty Selection Guide.