Size and fit Size: 24 W x 20 L cm (9.4 x 7.8 in). Equipped with an adjustable elastic band to fit a range of head shapes and sizes. Detachable goggles and protection Detachable goggles provide UV protection as well as wind and dust protection. Comfortable straps ensure a secure and comfortable fit on the face. Frame and breathability Sponge frame made from concentration cotton for good ventilation and comfortable wear. Breathable mouth filters and ventilation holes enhance airflow for easier and more comfortable breathing. Lens and vision PC lens offers transparency for clear visibility. Curved design provides a wider field of vision. Use scenarios Outdoor activities such as cycling, hiking, or running in windy or dusty conditions. Outdoor work or recreation in dusty environments where wind and dust protection are beneficial. Any openair activity requiring face protection with a clear, wide field of view.