Features: Made of polyester ice silk fabric, with a sense of cool, soft and comfortable fabric, skin-friendly and odorless. And can play an effective role in sun protection Suitable for Most People：Welding caps with elastic，the head circumference fit 21"-24.5"(54-62cm)，the crown height fit 7.1"(18cm). Breathability and Comfort: Breathable, lightweight, easily absorbs sweat, dries quickly, keeps head cool during exercise. The cap can be machine washing or handwashing. Classic Camouflage Styles: You will receive 3 pieces of caps in classic camouflage colors for both men and women to meet your wearing and changing needs; you can match your clothes according to your preference and mood. Widely Applicable: The welding cap is suitable for many usages such as helmet liners under welding helmets, hard hats, motorcycle helmets and more. They are also suitable for running, biking, hiking and many other outdoor activities. TRQWH Welding Cap Camo Helmet Liner Breathable Cooling Welders Caps Sweat Absorption Welding Accessories with Elastic 3 Pcs