Easy to Use and Comfortable - It's sooo easy to use, just put it on like a backpack and adjust the straps. Then, pick the heat setting that feels best for you. There are three to choose from, so you can find the perfect one. It's also cordless so you can wear it anywhere around the house. Fantastic Heated Shoulder Wrap - It has three heating levels to choose from, you can customize the heat intensity to suit your needs. Another bonus is the inclusivity of the product. The package includes two strips that fit all shoulder sizes comfortably, ensuring a snug and effective fit for everyone. Heated Shoulder Wrap with Vibration - Vibrations to shoulder area which certainly does feel good, especially after a long day. Plus, the addition of vibrating levels adds an extra dimension of relaxation. Touch-sensitive Digital Display - The touch-sensitive digital display is easy to read and use. The ON/OFF button is on the end of the unit, not the face of the control pad, and it also acts as a 'lock' for your heat and vibration settings. This is great because it keeps you from accidentally turning it off or changing the settings. Also, a press of the ON/OFF button gives you a quick peek at the remaining battery life in percentage form, which can be very handy. Heats Up Fast - This over the shoulder heating pad is great for people who need targeted heat on the shoulder area. It can be used on either side of your body. It is adjustable to fit many sizes. The arm section is velcro so it can be made tighter or looser and the crossbody strap has a cinch if you need to increase/decrease the size. Cordless and Rechargeable - No annoying cords tripping you up or keeping you tethered to a specific spot. The battery lasts a long time which is usually a good 5 hours or so on full heat with the vibration, and charges via USB. Combination of Heat and Vibration - The combination of heat settings and vibrations offers targeted relief that has noticeably improved his comfort and mobility. Soft, comfortable material. Well constructed, good quality craftsmanship. Works For Both Shoulders - Velcro straps work well, highly adjustable, fits both shoulders. Soft, comfortable material. Well constructed, good quality craftsmanship. Being able to use it on either side and one size truly should fit most, if not all.