HOT OR COLD THERAPY FOR INJURED SHOULDERS: There are three gears where you can heat your shoulders at different temperatures. The shoulder wrap is added with a mesh bag for cold therapy. Thermal therapy can help your shoulders recover from injury and relieve your pain. NOTE: HOT/COLD PACK NOT INCLUDED IN THE PACKAGE!!! Red-highest temp (65 to 75), Blue-medium temp (55 to 65), Green-lowest temp (40 to 60) LIGHTWEIGHT & ADJUSTABLE SIZE: S size: fits 31''-40'' in chest, 9''-16'' in arm, L size: fits 41''-51'' in chest, 9''-16'' in arm. Made of breathable neoprene; the fashion blue color shoulder brace is fully adjustable to fit most people's body size. Fits left and right shoulder for men and women. NOTE:The size of the shoulder strap is not very long. It is recommended to choose L size above 35" WORK WITH 5V USB TO KEEP WARM: Shoulder brace can be used as an ordinary add pressure shoulder brace to help with the rotator cuff, frozen shoulder, strains, sprains, tendonitis, arthritis, subluxation, and other shoulder complications. As a USB electric shoulder heat wrap or work with an ice pack for cold therapy. NOTE: IT IS ONLY SUITABLE FOR 5V 2.1A POWER BANK, OTHERWISE IT WILL NOT WORK!!! FOUR-CORNER COMPRESSION PAD: Our innovative four-corner compression pad is made of elastic neoprene, gently stretch the four corners and stick it, you will get more compact and more tight-fitting protection with comfortable neoprene material. NOTE: MESH BAG SIZE: 7"*7"!!! AVAILABLE HEAT SHOULDER AT ANY TIME: You can enjoy the warm and blood circulation in multiple occasions, whether you are walking or driving or working in the office. Short press the button to switch different temp mode red-highest, blue-medium temp or green-lowest. Using a voltage other than 5V will cause it to not work or burn. NOTE: POWER BANK NOT INCLUDED IN THE PACKAGE!!! Product Description Read more Feel pain relief and reduce recovery time from common injuries like: Tendinitis Rotator cuff Labrum Tear AC joint injuries Muscle soreness Dislocated shoulder