New in box Birkenstock 39 is comparable to US Women’s 8-8.5 and this is a regular/narrow fit Per manufacturers website: https://www.birkenstock.com/us/arizona-big-buckle-natural-leather/arizonabigbuckle-bigbucklehex-naturalleather-0-eva-w_1707.html?dwvar_arizonabigbuckle-bigbucklehex-naturalleather-0-eva-w__1707_color=1707 The footbed is designed for a roomy fit. Our Medium/Narrow fits the vast majority of women’s feet. Anatomically shaped cork-latex footbed Upper: leather Footbed lining: leather Sole: EVA Details: double wide strap with large adjustable pin buckles in metal “Made in Germany” Upper material: Natural leather The natural leather that we use is mostly smooth leather, in some cases tumbled leather. This type of leather has many special characteristics, such as breathability, adaptation to the shape of the foot and durability. Insole: Suede Footbed material: Cork Outsole: EVA