These birkenstocks are well-loved and taken care of! They're so comfortable and cute, and they're in a nice neutral color that goes with everything! The sizing is super wonky with birkenstocks. For reference, I typically wear a size 6/6.5 in sandals, and these are a size EU 36 (supposedly converted to size 5-5.5 US?) and they fit beautifully! Comment with any questions :) Premium leather or Birko-flor™ upper with adjustable buckle closures to ensure easy on-and-off wear and a secure fit. Birki-flor is made of acrylic and polyamide felt fibers. See drop down color menu for materials. Anatomically correct cork footbed, crafted from cork that is 100% renewable and sustainable, encourages foot health. The suede lined, contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Raised toe bar is designed to encourage the natural gripping motion of your feet, exercising your legs and aiding circulation. Neutral heel profile and deep heel cup keeps the natural padding of your foot where it belongs, under the heel, distributing your body weight more evenly. Flexible EVA outsole offers lightweight, shock absorbing support with lasting durability. Dual layer Jute: top wicks away moisture while the bottom adds strength and makes resoling easy. You will enjoy your Birkenstocks for years because they can be repaired, resoled or even completely renewed.