Squeeze-4-strength Therapy Putty Can Be Squeezed Stretched Twisted Or Pinched An Excellent Therapy For Strengthening Excellent For Hands And Even Feet Nontoxic Clean Non-oily And Non-greasy Will Not Leave Residue Or Stick To The Skin Putty Color Reflects The Putty Strength From Xx-soft To Firm Various Putty Colors Can Be Combined To Create A Custom Strength Program Latex-free Light Beige - Xx Soft Yellow - X-soft Red - Soft Dark Beige - Medium-soft Green - Medium Or Blue - Firm