I wore these indoors, so I think they're relatively clean. I only wore them at work during the winter season every year. About 3 years. I changed jobs and no longer have the opportunity to wear them, and I don't particularly mind the smell, so I'm selling them. I wear 26cm sneakers, but the size difference didn't bother me. No box. Nike Burrow SE NIKE BURROW SE DR8885-300 Size: 27cm Color: Khaki [Product Description] The foam midsole/outsole keeps you comfortable, and the inside, including the sockliner, is lined with a fleece-like material to keep you warm and comfortable. It also has a zippered pocket on the instep to store small items such as keys and cash.