Stay refreshed all day with the HydroJug Traveler 40 oz Mug, built from durable 18/8 stainless steel with double-wall construction and copper vacuum insulation to keep drinks cold for hours. Designed for convenience, it features an ambidextrous threaded lid with a flip-up spout, integrated straw for easy sipping, and a wide ergonomic handle for a comfortable grip. Finished with a powder-coated exterior for added durability and style. For cold beverages only.