One Size Fits All 5 Panel High Profile Mesh Back Trucker Hat (Otto Cap 39-165) High Crown design for additional headroom Structured Foam Front Panel with Lining for enhanced durability, comfort and a sturdy shape Color-Matching Rope across the front panel accents the hat Mesh Back offers enhanced breathability and airflow Premium Durable Plastic Snap Closure for easy adjustment and a secure fit Matching Fabric Undervisor and Sweatband adds a stylish finish and cohesive look Soft Terry Cloth Sweatband for Maximum Comfort with Moisture Wicking