Tregranar Freeway No Fog sport glasses – Sport glasses designed to reduce the effect of fog when you need magnifying. The hole in the lens will always give you free sight forward. Works good for orienteering and other occations when you need to read a map or GPS etc.
They also have an adjustable, sliding neoprene strap for a perfect fit. Also included is a protective microfiber cloth and a hard case.
Available in several in glass strengths: +1.0, +1.5, +2.0, +2.5, +3.0