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.

Bloc Tide

Black Frame/Blue Mirror
£45.00
Out of Stock Notify when back in stock
Black Frame/Red Mirror
£45.00
1 In Stock
Shiny Tortoiseshell/Grey
£45.00
2 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 transmited.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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