Birkenstock Kumba - Brown - UK 7

Oiled nubuck is a type of leather that has been treated with oils and waxes, giving it a slightly distressed look and enhanced water resistance. It requires specific care to maintain its unique finish.

The cork footbed can be cleaned with a damp cloth. For deeper cleaning or to refresh it, use a dedicated Birkenstock cork cleaner and refresher. Avoid excessive moisture.

The adjustable instep strap allows for some customization, which can accommodate slightly wider feet. However, Birkenstock also offers specific 'wide' fits for their models if needed.

The Kumba model features a distinctive heel strap design and an adjustable instep strap, offering a blend of sandal-like open design with enhanced security and comfort features.

While the oiled nubuck offers some water resistance, these sandals are not designed for prolonged exposure to wet conditions. It's best to dry them thoroughly if they get wet and avoid submersion.

The break-in period varies per individual. Many users find Birkenstocks comfortable from the start, while others may need a few days to a week of moderate wear for the footbed to fully mold to their foot shape.

Adjust the instep strap using the buckle to achieve a secure yet comfortable fit. The heel strap is designed to be soft and may have minimal adjustment.

Apply a leather conditioner or balm specifically designed for oiled nubuck to restore moisture and luster. Ensure you test the product on a small, hidden area first.

The heel strap is designed to be soft. If it still causes irritation, ensure the sandal is the correct size. Breaking in the sandals might also help.

This can sometimes occur with new leather. Try applying a small amount of leather conditioner to the tongue of the shoe where it meets the footbed, or check for any loose components.