Shimano Catana BX Polarised Glasses. To a keen angler, a pair of quality sunglasses is every bit as important as rods, reels, line and hooks. Shimano's Catana Sunglasses have smokey colour, polycarbonate, polarised lenses and come in a gloss black and red coloured frame. Great for low light options, perfect for dawn or dusk type fishing. But even better at eliminating water glare at full light and giving you the advantage of spotting the fish below.