I thought it was a regular or small size, but I didn't ask the seller and he didn't measure. When I received it from the mail, I was very surprised, it was too big. More precisely, the blade itself is not that big, I have 4-inch folding blades, but the handle is huge, about the size of a big Bowie handle. Search showed this DK-XLFH, 5 1/4 closed, 4" blade