These Japan Self-Defense Force Sunglasses($317) are officially endorsed by the Japanese military due to their ultra strong lens! Its lens will not fracture even if it is hit at 171km/h (106mph) by a 0.3" diameter object - that's just how strong it is, and also its lens will not shatter if a 500g piece of iron dropped on it from 1.27m~
via : japantrendshop
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