Premium quality features of the Siena Teapot include durable yet lightweight borosilicate glass construction, removable stainless steel infuser and stainless steel lid. Remove the stainless steel parts and boil water in the microwave, eliminating the need for a separate kettle. Keep warm on a stovetop, and clean up quickly in the dishwasher. The 40 oz. capacity brews 4-5 cups of tea – perfect for sharing.