The Jackson™ helmet is focused on design and style. The sleek standout helmet's development created an opportunity for an evolutionary step forward in performance and functional attributes. The modern profile of the new Jackson helmet utilizes the new Passive Aggressive Venting system, inspired by the aerodynamic airflow of high-end autos. The discreet yet powerful system effectively manages airflow and temperature while in-motion riding, hiking or standing static. The overall look is finished with a slight brim and subtle lines for Seamless Compatibility with Giro goggles. The Jackson Mips® technology, an ultra-lightweight construction and the dialed In Form 2 Fit system allows you to confidently focus on the terrain ahead. Leave no line untracked in the new ultimate freeride helmet. Features: CONSTRUCTION: In-Mold Construction VENTILATION: Passive Aggressive Venting System - discreet exterior vent design and interior channeling combine to create optimal airflow and temperature regulation. Auto-venting technology manages airflow and temperature while in-motion riding, hiking or standing static.Stack Vent™ Technology FIT SYSTEM: In Form™ 2 Fit System - lighter and lower-profile than the original, making it even easier to dial in a custom fit in seconds, even with gloves on.On-the-fly Vertical Tuning - accommodates different goggles and head shapes for a custom fit free of gaper gap. PRODUCT WEIGHT: 400g (size Medium) ELECTRONICS COMPATIBILITY: Compatible with aftermarket Giro audio systems by Outdoor Tech HIGHLIGHTS: Removable goggle retainerRemovable ear padsSeamless Compatibility with all Giro gogglesMips® equipped Sizing: ADULT SUPER FIT SIZE CIRCUMFERENCE S 52 - 55.5 cm M 55.5 - 59 cm L 59 - 62.5 cm XL 62.5 - 65 cm Giro Jackson Mips Snow Helmet | Shop Ski & Snowboard Helmets at Trojan Wake Ski Snow & Snow Skiers Warehouse