New quick collar buckle closure system with precise adjustment range for a supreme fit. Zippered collar extension to provide higher coverage against the elements when required. Removable and wearable waterproof Drystar membrane for effective all-weather performance. Removable thermal layer for added practicality. Internal waist connection zipper for attachment to Alpinestars riding pants. Soft collar inner liner with padded edging for improved rider comfort. Chest and back pad compartments to accommodate the Alpinestars Nucleon chest and back pads, available as an accessory upgrade.