describe: Weight of 2 EggsThe arm sling (medium size) weighs only a quarter of a pound, which is equivalent to two eggs. The arm rest is filled with sponge and pores, which is light and soft, ventilated and wicks away sweat quickly. Wearing it is as comfortable as wrapping yourself in a blanket, but not stuffy enough to make you forget it's there. This sling is perfect for sleeping, but can also be used at home, while traveling and at work. T-Strap DesignThis shoulder strap uses an integrated T-strap at the waist to secure the arms in place, keeping the arms close to the body and preventing the arms from swinging, thus holding the shoulders in place. This product does not contain neoprene and latex ingredients, has no odor and is non-irritating to the skin. Exquisite workmanship, fashionable style, sturdy and durable. Available in different sizes, suitable for men and women, teenagers, middle-aged and elderly. Sponge shoulder strap, no strangulationThe entire shoulder strap is filled with sponge, which is light and comfortable and can be worn for a long time without feeling discomfort. It won't cut off your blood circulation and effectively relieves stress on your shoulders and neck. It will make you feel better and help you or your friends get through difficult times. COMFORTABLE TO WEARThis shoulder sling can be worn with one hand (it depends on the situation), but it's not easy. Best worn with the help of a friend. Provides perfect fixation and protection for shoulder muscle and tendon pain, shoulder joint instability, dislocation, sprain, contusion, rotator cuff surgery, acromioclavicular joint injury and other injury care. Suitable for left and right arms. Package contents: 1 piece arm sling