At just 1 lb 3 oz., the SummerLite is the lightest bag we make in a continuous baffle construction. Our goal in designing this bag was to make it as light as possible without removing key features or functions. The result is a completely baffled bag that weighs just 19 ounces and features a full-length zipper with insulated guard. The SummerLite is a dream come true for fanatics of lightweight backpacking.