5116 Size: XX-Large Features: -Back posture aid support.-Covers the entire upper back to provide comprehensive, comfortable posture support.-Adjustable closer in the front.-Soft laminated plush pile shoulder pads.-Sturdy design.-For correct size measure from center of back over shoulder under arm and back to center of back.-Made in the USA.-Small adjustable size: ( Less than 32").-Medium adjustable size: ( 32" - 34").-Large (34"-38").-X- Large (38"- 42").-XX-Large (42"-46").-9" H x 8" W x 5" D: 0.4 lb.