CE Safety Standards: This fashion bicycle helmet is made of high-quality ABS hard shell and EVA buffer layer material, providing high strength, excellent impact resistance, and shock-absorbing protection for cycling. Hat Shaped Helmet: The hat-style helmet for women features a wide brim design that offers effective sun protection during hot summer days. Ventilation Comfortable: This cycling helmet includes ventilation ports, making it lightweight, breathable, and comfortable for extended wear by keeping the head cool and dry. 58cm to 60cm Adjustable: The adult bike helmet comes with adjustable chin straps, allowing easy adjustment of head circumference to fit various head sizes. Wide Using Applications: This stylish bicycle helmet is suitable for daily use, commuting to school or work, outdoor travel, cycling, biking, and riding. It also makes a great gift for outdoor enthusiasts. Specification: Material: ABS, EVA, Cotton Size Chart: Adjustable Head Circumference: 58cm-60cm / 22.83inch-23.62inch Hat Depth: 10cm / 3.94inch Hat Brim: 8.5cm / 3.35inch Back Brim: 5.5cm / 2.17inch Package Includes: 1 Surf Bucket Hat 1 Hard Shell Note: Please allow slight variations due to manual measurement and differences in display screens.