The NEW FLA Therall Moist Heat Therapy Mitt provides soothing warmth and pain relief to aching hands, fingers and wrists. The Moist Heat Therapy Mitt is filled with unique Microbeads that absorb and retain moisture from the air. Once heated, they slowly release the moisture for deep, penetrating heat. After use, the Microbeads begin to absorb moisture again. With proper care beads will never dry out, leak or rupture, allowing for repeated use.