18 oz capacity in durable 18/8 (304) stainless steel.; Double-wall vacuum insulation with a copper-plated core.; Spill-resistant Tritan polymer slider lid.; Sweat-free exterior stays comfortable to hold.; Inner liner with graduated mixing markings.; Non-slip bottom bumper pad for surface stability.; Corrosion-resistant construction for lasting durability.; Suited for home, porch, tailgating, and everyday entertaining.; Keeps hot drinks warm and cold beverages chilled.; Distinctive rugged barrel-inspired styling.