From Stanley, this mug features: Sip in 360 degrees with the 16-ounce Transit Surround Mug. Just push the center button down to open and drink from any point around the rim – push again and it’s leakproof. Liquid flows from the outer edge, never over the button, for a clean, hygienic sip every time. Crafted with a faceted exterior to fit your style and your commute, and premium AeroLight™ technology to make it significantly lighter than standard stainless steel. Featherweight spun-steel with vacuum insulation keeps your drink at the right temperature for hours. A soft silicone footpad means quiet landings everywhere your day takes you. 18/8 recycled stainless steel AeroLight™ spun-steel technology Double-wall vacuum insulation Leakproof 360-degree sipping lid Push button access Silicone footpad Dishwasher safe Compatible with most car cupholders BPA-free Approx. 16oz Imported.