A gent can never have too many shoes we know what youre thinking why do these allan sage green brogues feel so bloody smooth they look like the backside of an aston martin db9 go on lad do a bond impression anyway the technique is called acid washed to give you a better understanding we consulted our chief designer mat over to you mat the leather used is called nubuck and is a soft one anyway but a sponge covered in acid is rubbed over the surface of the leather to take off the to