I tried them on outside for a few minutes and then stored them at home. I wiped them down after use. There are some slight stains on the inside of the box, as shown in photo 5. Please purchase if you understand this. Size 42 (26.5-27.0 cm) [Leather sandals that have become a summer staple for ADAM ET ROPE'] These sandals add a touch of elegance to the casual summer look. Their versatility makes them a great match for any style. [Material] Made of high-quality genuine cowhide leather. [Design] The design features a double monk strap, often seen in leather shoes, combined with a casual sandal design, adding a touch of sophistication. The sole provides a good balance of cushioning and elasticity, making these leather sandals very comfortable to wear. [Recommended Styling] Simply pair them with a clean and modern outfit like a shirt and slacks for a sophisticated and relaxed look. They can be worn barefoot, or with socks for a playful touch, as they are open sandals. [Recommended Size] Foot length: 25cm → Recommended size 26cm Foot length: 26cm → Recommended size 27cm Foot length: 27cm → Recommended size 28cm *The strap design allows for adjustment even for those with wider feet. *How to measure foot length: Place a white paper on a flat floor, stand straight on it, and spread your feet sufficiently.