It's all in a name; this four-in-one jacket is an incredibly versatile garment, with utility in any weather conditions. In its full-fledged configuration, this jacket is constructed to withstand harsh inclement weather. It features a waterproof outer shell complete with a storm hood and internal storm flap. This shell has been tested to Patagonia's rigorous H2No performance standard, built from recycled polyester. The interior zip-out jacket is constructed with a recycled polyester exterior shell with DWR finish. It's interior is a high-pile Los Gatos fleece with Thermolite insulated sleeves, and can be turned inside out when worn in warmer conditions.