The GATH EVA HAT seamlessly combines the distinctive features of the original Gath Surf helmet and the latest Gath Convertible Helmet, delivering the ultimate sports helmet with an impeccable fit. A preferred choice among professionals and wave-air sports enthusiasts, it includes an Anti-Rash Sleeve, adjustable Audio Vents, and a convenient Storage Bag.Size Chart:The provided sizing chart serves as a guide, recognizing variations in head shapes. Measure around the head â mid-forehead, just above the ears.Technical Information:GATH helmets exemplify quality craftsmanship, adhering to strict specifications and backed by a robust 3-year warranty. Built to withstand diverse conditions, the materials are strong, durable, rustproof, and capable of enduring harsh climates and temperature extremes.Shell: Crafted from long-lasting, UV-stable, high-impact-resistant plastic.Liner: Multi-impact, non-water absorbent foam.Headband: 10mm thick multi-impact, non-water absorbent foam.Comfort Strips: Multi-impact, non-water absorbent foam.Fittings: All Gath helmet custom-built screws and rivets utilize strong, non-corrosive, saltwater-resistant materials.Retention System: Utilizes non-stretch standards-approved webbing, equipped with standards-approved quick-release buckles for secure retention. The system features nylon-coated, non-water-absorbent foam for enhanced comfort.