Effective sun protection: The black sun protection hat is designed with a wide brim and neck flap that provides comprehensive protection against UV rays during the summer. The nylon, ABS, and EVA material ensures that the hat is lightweight and breathable, making it ideal for cycling and other outdoor activities where sun protection is important. Comfortable ventilation: The hat has strategically placed ventilation holes on the sides that reduce heat buildup and improve airflow around the head. This allows the user to feel cool and comfortable even on warm days, which is crucial for long-term use when cycling or hiking. Stable fit: With an adjustable wind strap and a stable construction, this sun protection hat ensures that it stays securely in place even in windy conditions. The adjustable size of 58 cm and the ability to attach the neck flap with Velcro make it flexible and adaptable for different users. Specifications: Color: Black Size: 30cm x 20cm x 10cm, 58cm head circumference adjustable Material: Nylon, ABS, EVA Package includes: Hat x1