Chainmail shirts where used for over 2000 years as a form of protection. Although the size and design changed over the years the basics did not. it provided a flexible and relatively low cost (compared to plate amour) form of protection. The chainmail Haubergon (or little hauberk) is the chainmail equivliant of a modern t-shirt. It normally comes to the waist and has elbow length sleeves depending on the size of the wearer. Made from 16 ga 5/16ths mild steel rings. Zink platted to protect agents rust. One size fits most. Standard size fits up to a 54 inch chest size. XL size fits upto 60 inch chest size. Please remember we recommended to leave up to 8 inchs of space to make room for a gambeson or arming jacket underneath the mail.