Please consult your Doctor as to whether this belt is suitable in your case, how long you are allowed to wear it, how strong the compression should be etc. Our liability is limited to replacement of the product. Comfortable to wear during everyday working and sleeping. Washable to maintain hygeine. It can be worn for either Left or Right side. Place your arm in the front with elbow at right angle. Measure the circumference at the position where your arm touches the body. Refer to the size chart in the pictures. This Shoulder Immobilizer Support Brace is wraps around the chest and helps in immoblilzing the arm, without hurting the neck. Unlike the post-operative slings provided by hospitals which transfer the load to the neck; this saves your neck from aches, spasms etc.