The Duval is our first front-flipper, combining the best features of two classic knife silhouettes into a sleek and functional new form. Traditional gentlemen's knives require two hands to open and close, and they don't generally lock. With its front-flipper opening style and it's frame-lock design, you get the best of both worlds: the ease of opening and security of a traditional frame-lock knife, combined with slimness, symmetry and beauty of a classic gentlemen's pocket knife.