Hateyes are hat-brim mounted, clip on magnifiers for fly tying and tying knots. Hateyes are  a great choice for when threading fine tippet through the eye of a tiny fly becomes too difficult. They are there when you need them, and can be folded back under the brim of your hat for when you are back to fishing. A super convenient and no-hassle solution to problems with close range vision.

Stainless steel construction, interchangeable lenses.