Commuters will love this promo gift! The 20 oz. Everest stainless steel tumbler is a copper-lined double-wall vacuum insulated tumbler with stainless steel walls and keeps drinks hot for 8 hours or cold for 18 hours. The lid has slide closure with a rubber gasket. BPA-Free. The box is made with eco-friendly recyclable cardboard. This makes a great employee gift, trade show give away, this makes a great advertising piece for colleges, booster clubs, customer thanks, and so much more. Available in an assortment of colors and imprint options for your brand. Commuters will thank you for this travel tumbler!