Get the Work Sharp Guided Field Sharpener on sale at Amazon for $35. The portable knife sharpener is great for hunting, fishing, and pocket knives, along with other tools.

Purpose built for heavy field use, the Guided Field Sharpener 2.2.1 from Work Sharp is quick to use and versatile.

My current favorite sharpener is Work Sharp’s new Folding Field Sharpener which is sized for pocket carry but has enough to it so you can get a pocket knife back in shape no matter where you are.