The Dynafit DNA Training Jkt is the real deal. The masters at Dynafit have it mostly figured out. The fabric is the perfect balance between air permeability and protection from weather, and if a different fabric is required, they panel it in. The fit is trim for an athletic build. The hood fit is perfect for under helmet. The sleeve-length is just right for skinny tall people. The skin pockets inside are large and make stashing skins at transitions quick and easy. My only grip is that the beacon pocket is too small for my beacon. Maybe its not Dynafit's oversight, but that my beacon is too large!