DGYAO LED Light phototherapy device utilizes the thermal principle of combining 660nm red light and 880NM near infrared light to promote blood circulation and soothe sore muscles and joints in the body. Red Light Therap for Hand - Ergonomically designed 360-degree hand wrap for all-around relaxation and phototherapy. 10.6” x 7.4‘’ x 2.3‘’ Large size fits most people s hand. Healthy Red Light: According to the study 630nm and 660nm red light improve skin appearance while 880nm infrared light penetrates deep into tissue cells to sooth aches reduce inflammation and promote cell regeneration. Safe Comfortable and Easy Use - The infrared light therap device easy to use no side effects made of comfortable fibers that do not irritate the skin. PERFECT GIFT AND WARRANTY - Beautifully packaged can be used as a birthday gift anniversary gift or elder s gift etc. One year warranty lifetime free replacement parts 90 days free return and exchange