This 18 oz Urban Peak® Elevate Camp Mug is built for all-day temperature retention with its 18-8 stainless steel, dual-wall construction and copper-lined, vacuum-insulated liner that keeps drinks at optimal temps up to 8X longer. A lead-free vacuum seal locks in performance, while the clear push-on, sip-through lid and powder-coated finish add everyday ease and durability. It's a rugged, modern essential for everything from morning coffee to campfire nights.