Have you ever spotted a shape in the margins, only for glare to creep in from the side and ruin the moment? Side shields block those unwanted reflections so your vision stays locked onto the signs that matter.
Stray light kills clarity
Even with polarised lenses, light slipping in from the edges reduces contrast and washes out detail. It also forces your eyes to adjust constantly, creating fatigue when you need focus.
Better focus means better decisions
Side shields calm the light environment around your eyes. Carp become easier to track beneath the surface and you notice subtle movements faster.
- Sharper outlines on moving fish
- Cleaner reads in shallow water
- Confidence when stalking tight to cover
Why it helps in real sessions
Fish often show best at awkward angles. You might be crouched low by reeds or leaning to see past a reflection. Side shields help keep the view usable even when the sun is in exactly the wrong place.
When side shields make a real difference
- Bright banks and open water – low winter sun and mid-day glare
- Close-in stalking – direct reflections from water and vegetation
- Boat work – constant angle changes and reflected light
- High pressure venues – tiny tells make the difference
Removable shields: the best of both worlds
Side shields don’t have to be permanent. Remove them for social time, travel or casual wear. Clip them on when focus matters. One frame, two personalities.
Fortis options with side shields
Anglers who like to keep options open choose:
- Izolátory kulaté – classic look with stealthy performance.
- Izolátory Square – bolder shape with strong peripheral coverage.
See deeper with fewer distractions.
Explore the full range:


