Alter Ego 4.1 Is made up of an outer textile jacket/layer and an inner mesh jacket/layerWATERPROOF TEXTILE JACKET Outer LayerWaterproof treated Rock Tex 660 and Hitena outer shell that covers an armored mesh jacket underneath!Variable Flow ventilation system with waterproof zippersCross Linked Ventilation with Wind Tunnel Cooling Patent PendingMulti-point Sure Fit adjustment system360 reflectivityExtended mandarin collar (microfiber lined)MESH JACKET Inner LayerHeavy duty polyamide Free Air meshC.E. Certified armor (shoulders & elbows)Removable spine armorUltra-low profile neoprene collarRemovable quilted vest warmth linerMulti-point Sure Fit adjustment systemPockets for eye glass & face shield storage360 reflectivity