Stanley IceFlow 1.0 Flip Straw Tumbler 20 oz is a durable, reusable tumbler designed for active lifestyles and everyday hydration. Made from BPA-free 18/8 stainless steel, it features double-wall vacuum insulation that keeps drinks cold for up to 7 hours and iced for up to 35 hours. The leakproof flip straw allows easy, mess-free sipping, while the built-in handle makes it comfortable to carry on the go. Backed by the Built for Life™ lifetime warranty, this tumbler delivers long-lasting performance with trusted Stanley quality.