Features:_x000D_HIGH QUALITY MATERIALS: This bike helmets is made of high quality materials that are resistant to drops, unbreakable and sturdy._x000D_Breathable: multiple ventilation holes designed to maintain breathability during long rides._x000D_Safe and reliable: high quality LED lights with bright and long lasting flash patterns for increased visibility and safety ._x000D_Four light modes: multiple light settings for different visibility in different environments._x000D_GREAT GIFT: This bike helmets is a great gift for cyclists on Christmas/Halloween/Thanksgiving/Birthday light holidays. _x000D_ _x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_Description:_x000D_Material: Plastic_x000D_S 48-53cm head circumference_x000D_M 54-57cm head circumference_x000D_L 58-61cm head circumference_x000D_XL 61-64cm head circumferencePackage List:_x000D_1 x Bike Helmets