To meet a wide range of strengthening needs for hands and feet, the putty can be squeezed, stretched, twisted or pinched Features a 4 ounce tub of medium green putty to provide resistance during hand therapy exercises 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 Micro-fresh putty is nontoxic, clean, non-oily, and latex free