Low-Profile Gotham Design: Sleek and stylish helmet with a subtle brim and signature Triple Eight logo vents, now available in a lightweight, water-sport-ready version Engineered for Comfort: The Sweatsaver Halo Water Liner combines three layers of foam and a moisture-wicking outer wrap for maximum dryness and softness. Designed with Velcro attachments for quick removal and washing Superior Impact Protection: Dual-density closed-cell EVA foam headliner and top crown for dependable shock absorption during water activities Durable Outer Shell: Constructed with a high-density ABS shell built to withstand rugged water sport use; Meets CE EN 1385 Water Sport Safety Standards for trusted performance in the water Find Your Perfect Fit: X-Small fits 20.1–20.5 in (51–52 cm), Small fits 20.6–21.3 in (52–54 cm), Medium fits 21.4–22 in (54–56 cm), Large fits 22.1–22.9 in (56–58cm), X-Large fits 23–24 in (58–61 cm)