Bloc Tide XMB620 Black Frame Blue Mirror Bloc Tide XMB620 Black Frame Blue Mirror
Bloc Tide XMB620 Bloc Tide XMB620
Bloc Tide XMR620 Black Frame Red Mirror Bloc Tide XMR620 Black Frame Red Mirror
Bloc Tide XMR620 Bloc Tide XMR620
Bloc Tide XT620 Shiny Tortoiseshell Grey Lenses Bloc Tide XT620 Shiny Tortoiseshell Grey Lenses
Bloc Tide XT620 Bloc Tide XT620

Bloc Tide

£45.00

Classic wayfarer shaped sunglasses, at home on the beach or in the mountain, make the Tide a stylish sunglass suitable for all. Category 3.

Stock Codes and Packed Weights

Bloc Tide

Black Frame/Blue Mirror
£45.00
Back Order
Black Frame/Red Mirror
£45.00
Back Order
Shiny Tortoiseshell/Grey
£45.00
1 In Stock

Classic wayfarer shaped sunglasses, at home on the beach or in the mountain, make the Tide a stylish sunglass suitable for all.

  • Comfortable softly rounded matt black frames, hand finished and polished.
  • Metal inlay detail on the temple.
  • Category 3 impact resistant poly-carbonate red mirror lens allows 18-8% light transmission. Heavily tinted for bright to extremely bright light conditions.
  • Optical Class 1 lens ensures crystal clear vision and maximum UV protection.

Category        Usage
0 Not really a category - transmits 100% of visible light. Protection against grit and ice only. 
1 43% - 80% visible light transmitted. Suitable for use in cloudy conditions with virtually no direct sunlight eg blizzards and whiteouts 
2 18% - 43% visible light transmitted. Suitable for use as general sunglasses and in cloudy conditions in the mountains, but not in direct sunlight in mountain areas where there will be a lot of reflection off snow and ice.
3 8% - 18% visible light transmitted. Suitable for Alpine and Himalayan mountaineering for most uses, but for prolonged exposure at high altitude Category 4 is recommended.
4 3% - 8% visible light transmitted. For prolonged exposure at high altitude and especially if you have weak eyes. Will be found too dark for everyday use and should not be used for driving a car.

*Categories 3 and 4 are the only categories suitable for Alpine and Greater Ranges mountaineering - however, just because the lenses are suitable does not mean that the design of the glasses is.

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