Birkenstock Arizona Birko-Flor (Unisex) Sandals Sz 39 Made of acrylic and polyamide felt fibers, this material is a soft fabric with a smooth leather-like finish. Contoured footbed offers firm stable support, a neutral stance with room for toes to stretch and spread, and a natural walking motion that encourages optimal toe movement and blood flow. Two top straps with buckle closures for an adjustable fit. Raised toe bar is designed to encourage the natural gripping motion of your feet, exercising your legs and aiding circulation. 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. Anatomically correct cork footbed, crafted from cork that is 100% renewable and sustainable, encourages foot health. Dual layer Jute wicks away moisture while the bottom adds strength and makes resoling easy. 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. Heat Warning - Cork footbeds or EVA soles can be damaged by exposure to concentrated heat. Do not leave your footwear in direct sunlight or in closed cars on warm days. If your footwear becomes wet, allow it to air dry slowly, away from direct heat. Gently used condition, please see pictures for more extra details