Columbia Men's Bonefish Flats Short Sleeve Shirt - MelonadeOne for the anglers out there, Bonefish Flats Short Sleeve Shirt is a functional summer shirt from Columbia's much loved PFG range of everyday fishing garb. That 2 way stretch fabric gives a nice bit of flexibility, while those big chest pockets (one with a nifty zip compartment) mean there's plenty of storage room. Another clever detail is that collar which can fold up to keep the sun off your neck during warm days by the river.