MORE DETAILS: Genuine nubuck is a terrific leather - more durable and less fussy than suede. FITTING: Shoes vary so please compare foot length with insole measurements, allowing 3/8"+ for wiggle room & growth - consultations always OK: Euro 18/US 3 = 4 7/16", Euro 19/US 4 = 4 11/16", Euro 20/US 4.5 = 4 15/16", Euro 21/US 5 = 5 3/16", Euro 22/US 6 = 5 7/16", Euro 23/US 6.5 = 5 11/16"