Tenn Outdoors Crystalline Pro Waterproof Packable Jacket Product Reviews by MuddyGoose - February 3, 20160 I've always thought it strange that anyone would want to buy a clear jacket. They look a bit odd and why not have something coloured, grey or black? Then I had the pleasure of doing some racing last year including the Amateur Worlds in Denmark and realised that a jacket needed to be transparent so that your jersey colours and your race number would be visible from underneath. Suddenly it all becomes clear! 549