Vintage French Hydro Air mens green open crotch workwear trousers knickerbockers plus fours size L

Vintage French Hydro Air mens green open crotch workwear trousers knickerbockers plus fours size L. 100% Cotton Canvas - heavy duty. Maker's label inside. Belt with metal buckle, open pockets and crotch, 3/4 legs - perhaps to be worn over other trousers to protect - not sure of actual use. Size: Waist: 36 inches; Rise: 14 inches; Leg inseam: 18.5 inches; Total length: 32 inches. Weight: 750g (allow 1 kg once packed). Reasonable vintage condition - various marks and general wear and tear and some corrosion to belt buckle but all part of their charm and character. Priced accordingly.