The Stanley Quencher Flowstate 40oz Grey Rock Stainless Steel Tumbler is a versatile and durable drinkware option suitable for both hot and cold beverages. With a solid gray color and insulated design, this tumbler keeps drinks cold for up to 12 hours and hot for up to 8 hours. Made of high-quality stainless steel, plastic, and BPA-free plastic, it features a drink-through lid for easy sipping and is machine washable for convenience. Designed by the trusted brand Stanley, this tumbler is a reliable choice for adults on the go, perfect for sports enthusiasts and anyone looking for a high-performance drink container.