Extreme weather protection with full coverage storm hood and YKKÆ AquaGuardÆ waterproof zipper. The Vertex Stormshell features 3-Layer H2XTREMEÆ waterproof/breathable technology and an advanced articulation and ergonomic fit with mechanical stretch fabric, allowing for a full range of unrestricted movement. Pit zippers help regulate your core temperature, and an articulated adjustable hood with a welded brim provides a comfortable fit and sheds water away from your face. The Vertex Stormshell is built with regular and recycled polyester fabrics.