For optimal comfort and longevity, proper setup, compatibility understanding, and care are essential for your BIRKENSTOCK Gizeh sandals. First, ensure initial fit by checking that your heel sits snugly in the heel cup and your toes rest comfortably without touching the front edge. Adjust the metal buckle to achieve a secure yet comfortable fit over your instep. As with all Birkenstock footwear, these sandals require a breaking-in period; start by wearing them for short intervals (30 minutes to an hour daily), gradually increasing wear time as the cork footbed molds to your unique foot contours. This specific model is designed for adult wearers, UK size 6, with a gender classification of 'Female'. The Birko-Flor® upper is remarkably easy to care for; simply wipe it clean with a damp cloth and mild soap, avoiding harsh chemical cleaners. For the natural leather insole, gently wipe with a damp cloth. If stains occur, a mild leather cleaner specifically designed for insoles can be used. The cork footbed is durable but needs protection. Keep it dry and away from direct heat or prolonged sunlight, which can cause the cork to dry out and crack. Periodically apply a specialized cork sealer to maintain its flexibility and protect it from the elements. When not in use, store your sandals in a cool, dry place away from direct sunlight.