Stainless steel outer and inner. Double wall construction for insulation of hot or cold liquids. Snap-on, spill-resistant thumb-slide lid with rubber gasket. Due to vacuum insulation technology, capacity is 18 oz. with lid on. keeps drinks hot or cold up to 6 hours. Non-skid rubber bottom. Meets FDA requirements. BPA free. Hand wash recommended.
Approximate dimensions: 7" H.