Vigor V2 is only slightly different in that the rear end of the handle is pointed down instead of up. This small tweak makes the knife more comfortable to hold for a long period of time against your palm. Another upgrade that we added was that the blade is made with 154CM. This OTF knife is designed to work vigorously for you. It is meant to be used and abused for your everyday task. Vigor is crafted to be lightweight for comfortable handling and optimal grip, the Vigor’s multi-texture handle will become one with your hand with use over time. The Vigor is a double action, large OTF that reaches a total of 7.5 inches when deployed and when retracted the Vigor is the perfect daily carry at 4.43 inches.