CE Safety Standards: This fashion bicycle helmet is made of high quality ABS hard shell and EVA buffer layer material, with high strength, great impact and shock absorbing protection, supports cycling.Hat Shaped Helmet: The Hat Type Helmet for women, wide brim design, provides great sun protection for hot summer.Ventilation Comfortable: This cycling helmet with vents, lightweight, breathable, keeping you cool and drying, long time comfortable wearing.58cm to 60cm Adjustable: The adult bike helmet is designed with adjustable chin straps, head circumference can be easily adjusted for different head sizes.Wide Using Applications: This stylish bicycle helmet is widely suitable for everyday wear, commuting to school or work, outdoor travel, cycling, biking, riding, etc. Besides, it is also a great gift choice for outdoor lovers.Specification:Material: ABS EVA CottonSize Chart:Adjustable Head Circumference: 58cm-60cm/22.83inch-23.62inchHat Depth: 10cm/3.94inchHat Brim: 8.5cm/3.35inchBack Brim: 5.5cm/2.17inchPackage Includes:1 Surf Bucket Hat1 Hard ShellNote:Please allow slightly errors due to manual measurement and different monitors.