So you need a cool (or hot) insulated cup to take with you on the go? This tough tumbler is made from durable stainless steel with double-wall vacuum insulation to keep your beverage hot or cold. It includes a MagSlidern Lid (using an actual magnet) to add an additional barrier of protection for keeping drinks contained and preventing heat or cold from escaping. Please Note: this magnet component is not leakproof and will not prevent spills. Available in stainless and DuraCoat colors. Available in Seafoam, Stainless or Black