Brand: Carson Optical. MPN: VM-14. The VM-14 VisorMag +5.00 Diopters (2.25x Power) Clip-On Magnifying Lens for Hats or Caps is a set of clip-on flip-up magnifying glasses that attach to the brim of most caps and hats. Perfect for fly-tying and all fly-fishing needs. Complete with protective soft-pouch its crystal clear acrylic lenses give you a sharp distortion-free view that allows you to see even the finest details with ease. These magnifying glasses are +5.00 diopters equivalent to 2.25x magnifying power. Keep these clip-on magnifier lenses in your tackle box so you "always have them at the ready.” Also available: +3.00 Diopter (1.75x power): VM-10. +4.00 Diopters (2x power): VM-12.