Sierra Waterproof Jacket YGroup_3264617 plus an advanced micro-structure cell

plus an advanced micro-structure cell design for efficient impact energy absorption and high levels of airflow

the Bionic Rib Support incorporates adjustable shoulder straps

Ergonomically profiled to enable the integration of Alpinestars knee protection

this suit also has a 100 percent polyester toweling liner for driver comfort

Sierra Waterproof Jacket YGroup_3264617 plus an advanced micro-structure cellWith a lightweight main shell optimized for waterproof performance while still deliveringoptimum levels of breathability, the Sierra Waterproof Jacket is also equipped with fully tape welded seams and waterproof zippers for the prevention of water ingress.