MOISTURE WICKING: Features a breathable membrane fabric that effectively absorbs perspiration and wicks it away from the head to keep you dry. HELMET COMPATIBLE: Designed specifically with a seamless, fitted cut to be worn comfortably underneath safety helmets without bunching or pressure points. QUICK DRYING: The specialized synthetic material dries rapidly, ensuring comfort during long shifts in hot environments. MACHINE WASHABLE: Easy to care for—simply machine wash up to 40°C (104°F) to maintain hygiene and performance. TWO SIZES: Available in M/L (56-59 cm) and L/XL (59-63 cm) to ensure a perfect, snug fit for different head sizes.