The Hydro Flask 12 Oz Coffee Mug Stone features a durable design and soft touch finish to provide a warm feel. The product benefits include a press-in lid that features Honeycomb Insulation™ for additional temperature control and an opening for easy sip to transport your beverage in a splash-resistant way. It is BPA-free, Phthalate-free and includes durable 18/8 Pro-Grade stainless steel construction. The TempShield™ insulation keeps beverages cold for hours. It comes with lifetime warranty.