Droll Yankees 16 oz. capacity. Built in wasp guard. Glass vessel helps keep nectar fresh and won’t yellow with age. Vessel unscrews from base for easy cleaning. Flush vessel top can sit flat on most hard surfaces which makes it easy to fill. Steel hanger is weather-resistant and rust-proof. UV-stabilized polycarbonate base won’t fade with age. Nectar recipe is engraved on the feeder.