The Tech ST is a premium all-weather road-touring jacket constructed with a 100% waterproof GORE-TEX® outer shell for unsurpassed weather protection, breathability, weight-saving & durability. CE-certified elbow & shoulder protectors combine with abrasion resistant leather outer panels for added protection performance. Construction Innovative, 3-layer textile & leather construction with sealed waterproof seams & ventilation openings, which is fully compliant with GORE-TEX® motorcycle rain test requirements. GORE-TEX® outer shell structure provides impenetrable barrier against rain & wind while maintaining breathability. Alpinestars exclusive Climate Control System (CCS) with GORE-TEX® approved waterproof air intakes & rear exhaust zippers, which offer greater regulation of internal airflow for enhanced riding comfort. Safety features GORE-TEX® Armacor seat panel for high levels of abrasion resistance & durability. Advanced soft polymer shoulder & elbow protectors are light & breathable. Chest & back pad compartments with PE protective padding (Bio Armor back protector insert available as accessory). Durable outer leather shoulders & elbow protection panels improve abrasion resistance. Double Velcro sleeve fastening system helps prevent protection displacement during impact slide. Comfort Rear shoulder stretch panels & elbow accordion stretch panels for greater maneuverability. YKK waterproof zippers on all external openings & semi-auto lock zippers on cuffs to ensure sleeve openings remain secure. Elongated rear profile & raised front profile for enhanced comfort in riding position. Width adjustment on jacket sleeves & waist. Year-round climate control with removable thermal lining & fit to allow Alpinestars Touring Mid Layer Top to be worn underneath. Detachable windstopper high collar with fleece lining & ventilation eyelets. Sleeves feature pre-contoured design for comfort & riding performance. Connection zipper on waist for compatibility with the Tech ST Pant.