The Giro Seam Helmet is the perfect all mountain helmet. An improved ThermostatÖ vent system, our Stack Vent, and a feather light weight will keep your temp under control, your goggles clear and your comfort level at an all time high. Finish it off with the best fit system ever made and with the Giro Seam Helmet you are ready for a full day on the mountain. Features: In-mold construction; X-Static anti bacterial padding; 12 Super Cool vents with Thermostat control; Stack Vent Compatible with all after market TuneUps systems