(So it was that I found a gambeson of tow from a Saracen. I turned the cleft to myself, and made a shield of the gambeson, which gave me a great service;)Or avint ainsi que je trouvai un gamboison d'estoupes à un Sarrazin. Je tournai le fendu devers moy, et fis escu du gamboison, qui m'ot grant mestier;
Does this point to the inside of the gambeson being smooth, and the outside having 'fendu' - fissures, furrows, clefts, etc.?
p.75
https://archive.org/details/memoiresdejeans01parigoog