Keep yourself warm with the Patagonia Reversible Tribbles Hoody. Its outer shell is made from a windproof polyester fabric with DWR finish. The inner shell of the hoody is made from sherpa-pile fleece for maximum heat retention. In between these shells, 100-g Thermogreen insulation keeps the hoody warm even when it is wet. Its snap-off hood can be attached to both sides of this reversible jacket. A spandex binding at the sleeve opening, hem, and on collar give it a snug and secure fit.