The brooks b1 is a design that has influences from both brooks and also the royal college of art in london rca for the first time a new range of moulded leather bags will be produced in the brooks saddle factory in smethwick england using the same machinery and techniques employed to make famous brooks leather saddles the shape is based on the width of the famous b17 saddle brooks most iconic model for the b1 and b2 bags and twice that width for the larger b3 edition the b1 can be fitt