Size: Plus 24.4 inches to 26.7 inches (62-68 cm) for people with large heads. Lengthen the brim, deepen the arc, designed for the big head Both sides are wearable, which means you'll have two types of hats at the same time! Ideal for everyday activities and outdoor activities, especially bushwalking, fishing, running, hitchhiking, baseball, cycling, golf, tennis, etc.