【Superior Fit & Comfort】- Choose from three sizes (M/L: 56-58CM, L/XL: 59-61CM, XL/XXL: 62-64CM) to ensure the perfect fit. Our innovative Quick-Dry & Cooling-Touch Technology Sweatband enhances head comfort, making it ideal for long hours of wear. Additionally, the silver accents on the back closure increase visibility and safety in low light or after dark, ensuring you're seen during evening activities. 【Enhanced Breathability】- Featuring a unique mesh structure and four-way stretch fabric, our summer mesh baseball cap accelerates the flow of moisture and heat, keeping you cool and dry during outdoor activities or hot weather conditions. 【Lightweight & Packable】- Weighing just 2.35 ounces (66.5g), our cap is ultra-lightweight and easily packable, making it convenient to carry in your bag or pocket. Unstructured panels fold easily, ensuring hassle-free portability wherever you go. 【Ultimate Sun Protection】- With UPF 50+ sun protection, our cap effectively blocks more than 99% of harmful UV rays, safeguarding your face and head from sun damage. The pre-curved 7cm long visor keeps the sun from your face and eyes, while the dark underbill minimizes glare for enhanced protection 【Versatile Performance】- Perfect for a variety of sports and outdoor activities, including golf, hiking, fishing, running, and more, our summer mesh baseball cap combines lightweight, breathable, and quick-dry features with UPF 50+ sun protection for optimal comfort and performance. Additionally, made with water-repellent polyester fabric, it sheds water quickly, keeping your head dry and comfortable during outdoor adventures.