KEEPS DRINKS HOT OR COLD FOR HOURS: This insulated cup with double-wall vacuum insulation keeps drinks hot for up to 12 hours and cold for up to 38 hours; this portable coffee mug makes the ideal drinkware for hot coffee, tea, water, and more DRINK COMFORTABLY ANYWHERE: Our stainless steel cup features an innovative swing lock lid that allows one-handed open and close for quick sips on the go; great for commuting or relaxing outdoors DURABLE COFFEE TUMBLER: Made from 18/8 stainless steel with a scratch-resistant powder coating; this vacuum-insulated travel mug resists peeling and fading for long-lasting performance PREMIUM BPA-FREE MATERIALS: This travel coffee mug with handle is made from BPA-free materials so every sip is clean; no metallic taste or flavor transfer for a better beverage experience STAYS QUIET AND STEADY: The LocknLock stainless steel mug with a non-slip silicone base grips flat surfaces to prevent noise and spills; ideal for use at work, in the library, or on the go