Rtic 30Oz Essential Tumbler With Lid, Insulated, Stainless Steel,, Graphite YOUR TO-GO COMPANION: Meet the Essential Tumbler?built to sip your favorite drinks on the go; featuring a ceramic-lined interior that ensures your drink never has a metallic taste, this travel tumbler lets you enjoy your beverages anywhere DOUBLE-WALL INSULATION: Built with double-wall vacuum insulation to keep drinks cold for up to 24 hours and hot beverages warm for up to 6 hours, making this stainless steel tumbler with lid perfect for any occasion DURABLE STAINLESS STEEL CONSTRUCTION: Crafted from 18/8 stainless steel and BPA-free materials, this tumbler cup is built to last; its durable design is RTIC tough, providing reliability and quality you can count on LEAK-RESISTANT LID: Designed for life on the go, the double-threaded, leak-resistant lid of this metal tumbler allows easy sipping with a simple flip of the closure; snap it down for a secure seal that prevents spills during transportation DISHWASHER SAFE AND NO SWEAT EXTERIOR: Its dishwasher-safe design (lid top rack only) and wide mouth allow for easy cleaning; the tumbler?s no-sweat exterior keeps your hands dry, while ensuring no water rings on your desk or table