[UPGRADED THUMB BRACE WITH HEAT: a traditional wrist thumb brace provides support for hand to help relieve pain and healing. This UPGRADED wrist brace adds extra heating systems to supportive hand brace which can not only provide solid support of thumb joint but also apply intense heat therapy for pain areas to speed up recovery from carpal tunnel syndromes tendinitis trigger thumb. CUSTOMIZED TEMPERATURE AND TIMER SETTINGS: the hand heating pad features an Easy-to-Use LED Display hand Controller with three temperature and five timer settings available allow you to personalize your most comfortable temperature and auto-off timer for warming or heat therapy. But NEVER SLEEP when wearing the wrist heating pad even if you have set the auto-off timer. RAPID & CONTINUOUS HEAT THERAPY: It will begin to heat in several seconds after plugged in and rise to target temperature in 3-5 minutes providing fast and intense heat for pain areas. All you need to do is just turn it on and enjoy the continuous heat therapy in relax. "SAFE AND RELIABLE FOR DAILY RELIEF: This hand heating pad is powered by a provided 12V adapter which poses a lower electrical hazard compared to a 110V AC power supply. Additionally the heating pads fiber heating element and embedded thermostat sensor make it more durable and safer than regular 110V heating pads." TWO SIZES FIT MOST: 2 sizes available covers most adults’ wrist size: S/M for 5-6.5 inch L/XL for 6.5-9.5 inch. The heated thumb brace with an appropriate size gives a nice snug fit which could provide much better heating and healing efficiency for hand pain.]