Rapid III Crypt Helmet. The Rapid III urban touring helmet combines sleek styling with functional design, making it ideal for both daily commuting and long-distance touring. Its shell is crafted from the LS2 proprietary HPTT material - a lightweight yet durable blend engineered to deliver the optimal balance of performance, protection, and longevity. Thanks to its refined aerodynamic profile, the Rapid III ensures a smooth, stable ride at any speed. Shell: Meets or exceeds DOT FMVSS 218 and ECE 22.06. Weight: 1350 grams,±50 grams. Made using High Pressure Thermoplastic Technology (HPTT). Three shell sizes, five EPS sizes, seven Liner sizes, and three Cheek Pad set sizes. Comfort: