Billie Eilish x Nike Air Force 1 High 07 SP 'Mushroom' - Brown - UK 11

'SP' typically denotes a Special Project or Special Edition release from Nike, indicating a unique design or collaboration.

These sneakers are not waterproof. While they offer some protection against light moisture, they are not designed for heavy rain or wet conditions.

The upper is primarily constructed from recycled synthetic leather, with Nike Grind material used for the outsoles.

The Nike Grind outsole can be cleaned with a damp cloth and mild soap. Ensure to wipe away any excess soap and allow it to air dry.

Loosen all straps, put the shoe on, and then systematically tighten each strap, starting from the ankle and working down, to achieve a snug yet comfortable fit.

These sneakers are designed for lifestyle and casual wear, not for high-impact athletic activities. They provide comfort and support for everyday use.

The 'Mushroom' colorway refers to the distinctive earthy brown hue of the sneaker, making it a unique and stylish choice.

This can be a characteristic of recycled and synthetic leathers. Ensure consistent cleaning methods. If it is a significant defect, contact customer support.

Adjust the five unique straps to find your optimal fit. Experiment with different buckle positions.

Like many leather shoes, the Air Force 1 High may require a short break-in period. Wear them for short durations initially until they conform to your foot.