The Phly is Shred Ready's first dual sport helmet for on snow or river sports. Phly down the mountains in the snow and when it melts shred the water! Three rear vents and two forward vents to aid air flow through the helmet. Forward Naca Scoops vents grab the air and force it through the helmet to the rear vents. For extreme cold weather, close the vents with the removable but breathable vent cover. The cover is a wind and water proof "fuzzy rubber" material that still allows moisture and heat to pass through the vents.