Our Lowball Tumblers are stainless steel and double-wall insulated to keep your drinks cold or hot all day long! They're 10 oz. with a spill-proof lid... perfect for your morning coffee or wine in the evening! Double-walled stainless steel tumbler features BPA-free lid with silicone seal to keep drinks hot or cold for up to 12 hours. 4.5in H x 3.5in diameter, 10oz.