A popular choice among NSA customers is our open-backed, surgeon-style jacket, the C28KV (pictured above). This 8 oz. Kevlar™ coat is eyeletted and features a wide Velcro closure at the back of the neck. A series of snaps allows for fitting adjustments. In choosing you size, follow the first chart. SM = 38 chest; 33 sleeve . MD = 42 chest; 33 sleeve . LG = 46 chest; 33 sleeve . XL = 50 chest; 33 sleeve . 2X = 56 chest; 33 sleeve . - *4-6 week lead time, non-returnable*