Proving very popular with orienteers requiring some eye protection & magnification
Full glasses with FLAT top bi-focal magnifier in lower part of lens, cutout in lens helps reduce misting up of lens.
Supplied with a clear lens
Polycarbonate lens for good protection when running in the forest etc.
Diopter strength: +1.0, +1.5, +2.0, +2.5, +3.0