Elbeco's Summit II is constructed from Hiptex 3000 for the outer shell and is waterproof and windproof. The seams are sealed to ensure water doesn't migrate through. So you can be seen on those gray dark winter days and nights, the jacket can be reversed to its ANSI/ISEA Class II side. This is a bright yellow with two-inch Scotchlite by 3M on the body and sleeves. This jacket lights up like a neon sign when light hits it. The Summit II gives officers high visibility when working DUI and traffic enforcement checkpoints.