Patagonia - Mirror lake Vest - Reversible IMMEDIATE CORE WARMTH AND STYLE. The Patagonia Women's Mirror Lake Vest does not have a vesting period. The minute you put it on, you're ensconced in reversible, water-resistant warmth. The color-block side is made from polyester plain weave, and treated with DWR so you shed the morning dew without trouble. The Mirror Lake vest reverses to a solid color, made from nylon faille and backed with wind-resistant polyurethane. Snap it up to your chin, thanks to a stand-up collar, for extra coziness. The waist adjusts via snapped tabs, and both sides have pockets. At hip length, this vest will cover the waistbands of most pants. The Mirror Lake vest is not all about looks. The vest's 200g Thermalite insulation reduces heat loss by trapping air in its hollow-core fibers, preventing air molecules from moving heat away from your body. With warm air trapped and DWR finish repelling water, you should reach your aprs-ski destination warm and dry. If you find yourself wearing more of dinner than you actually ate, reverse the vest for an immediate clean appearance. The slight drop-tail hem throws in a retro twist to this modern, slim-fit vest. Regardless of which side you show, know you'll be warm and dry in the Mirror Lake vest. Reversible 200g Thermalite insulation