1、Anti Swelling: This post mastectomy arm sleeve help contract the muscles of the arm and pressurize the blood vessels to prevent the backflow of blood, thereby reducing swelling. 2、High Elasticity: This lymphedema compression arm sleeve adopts soft material and seamless knitting ensures high elasticity that provides great comfort. 3、Prevent Lymphedema: This post mastectomy compression sleeve can effectively prevent upper extremity lymphedema. It is suitable for people after breast cancer surgery. 4、Relieve Symptoms: This lymphedema arm sleeve can prevent the sequelae of upper extremity lymphedema and effectively relieve the symptoms of mild, moderate and severe lymphedema. 5、Shoulder Strap: This post mastectomy arm sleeve has shoulder strap, which can be fixed when wearing, not easy to slip off. Item Type: Lymphedema Arm Sleeve Material: Nylon Pressure Grade: Level Two Pressure Applicable People: Upper Limb Lymphedema, Breast Cancer Surgery, Arm Swelling, Etc S: Thickest Arm Position(g): 26.5-33cm / 10.4-13.0in, Elbow Joint(e): 20.5-25.5cm / 8.1-10.0in, Wrist(c): 14-15.5cm / 5.5-6.1in M: Thickest Arm Position(g): 28.5-35cm / 11.2-13.8in, Elbow Joint(e): 22-27cm / 8.7-10.6in, Wrist(c): 15.5-17cm / 6.1-6.7in L: Thickest Arm Position(g): 30.5-37.5cm / 12.0-14.8in, Elbow Joint(e): 23.5-28.5cm / 9.3-11.2in, Wrist(c): 17-18.5cm / 6.7-7.3in XL: Thickest Arm Position(g): 32.5-39.5cm / 12.8-15.6in, Elbow Joint(e): 25-30cm / 9.8-11.8in, Wrist(c): 18.5-20cm / 7.3-7.9in 1 x Lymphedema Arm Sleeve