The Modern Hummingbird Feeders are made of beautiful, hand-blown glass and feature Easy Fill & Clean feeders that have 4 inch wide openings for easier filling and cleaning - Removable flowers, lid, and decorative hanging basket/perching ring are easily removed for thorough cleaning and ALL parts are dishwasher safe! 100% silicone gaskets provide Leak Free seals at the lids and flowers. Natures Way Bird Products exclusive LIFETIME warranty!