Ultra-Fresh®—an EPA-registered antibacterial, antifungal and antimicrobial agent—provides odor protection and makes Micro-Fresh Putty last longer than standard putty. Adding Ultra- Fresh® enables the putty to resist the destructive, odor-causing growth of microbes, making Micro-Fresh putty nontoxic, clean and non-oily. To meet a wide range of strengthening needs for hands and feet, the putty can be squeezed, stretched, twisted or pinched. Five distinct colors reflect established standards in resistive exercise, and patients can combine colors to create custom levels. Latex free.