The Icebreaker Women's BodyFit 200 Oasis Hooded Top provides more warmth for your noggin and neck without the needfor extra accessories like a beanie or hat. The hood fits snugly against your head, so it can easilyfit under a helmet. Merino wool fibers are soft, breathable,temperature regulating, and naturally antimicrobial for odor control. The frontzipper allows you to customize your level of warmth or ventilation. Offsetshoulder seams allow room for backpack straps to lay flat against fabric ratherthan causing uncomfortable seam rubbing, and the side seams are moved toward the backto eliminate chafing when you're on the move.