Raglan cut sleeves for improved range of motion; Mesh underarm panel to increase ventilation; Two bicep pockets with YKK zipper closure; Two shoulder patch panels; Hook & loop cuff adjustments; Moisture Wicking; Anti-Static; Low profile zipper garage on collar (New for Gen II); Bicep Pocket with Pen Slots (New for Gen II); Pleated Bicep Pocket (New for Gen II)