Denim was invented in the French city of Nimes where tailors began weaving cotton together in a unique way, in which the weft passes under two or more warp threads, resulting in a reinforced fabric. The outer warped threads were dyed blue or indigo and the inner weft thread was left in the original white colour. This is why jeans and denim jackets are blue on the outside and white internally. Denim’s iconic ageing process, where the hidden white begins to push through the original blue, is a direct result of this weaving method. The name ‘denim’ derives from “de Nimes” meaning “from Nimes”.