These run a little big 8.5M - 10.5 womens I'd say.

The Birkenstock Naples Wrapped Habana Size 41 (M8 W10) are stylish loafers made of oiled leather with a slip-on closure. These unisex adults sandals are in a classic brown color and feature a standard shoe width. The leather insole provides comfort and durability, making them a versatile and trendy choice for any wardrobe. Perfect for adding a touch of sophistication to your outfit, these Birkenstock sandals are a great addition to any shoe collection.