13"x6Large Area: This wearable red light therapy device consists of an alternating array of 120 red light (660nm) and 240 invisible infrared light (850nm), a total of 360 medical infrared lights, penetrates to deeply in 30-40 mm, making it beneficial for bones, joints and deep muscle recovery problems. Multi-function: This red light therapy device can wrap your whole body including head, neck, back, shoulders, arms, knees, hands, feet to help you improve your physical condition, accelerate postoperative wound recovery, relieve soreness, Improve sleep and enhance body resistance. Pain Relief: 650nm Red Light could speed up the met-abolic rea-ction of ce-lls, reducing infla-mmation and speeding hea-ling. 850nm Near Infrared light has a particularly strong ability to could penetrate deeper into the tis-sue, or-gans, and jo-ints, to promote blo-od circul-ation. Safe and reliable no side effects. Doctor-Recommended: Many doctors recommend his customer and athletes to use this product, and it has achieved good results. This device has obtained the international certification. Now you could relieve painful joints and muscles and improve physical condition at home for a fraction of the cost. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!