The Toadfish Non-Tipping 20oz Tumbler 4-Pack is made from high-grade stainless steel and is double-wall vacuum insulated to keep your drink icy cold or hot to the last sip. Featuring our SmartGrip suction technology, this tumbler will keep your drink upright and mess-free. Every tumbler comes with our shatterproof lid keeping you on the go without worrying about spilling your drink.