Let there be light: Microbe-disinfecting UVC LED in the lid activates at 6-hour intervals to eradicate bacteria and odor and keep your water pure and clean-tasting. Thermal insulation maintains heat up to 12 hours or cold a colossal 24. Double-wall stainless steel. Hand wash only; do not microwave. 2.88” x 9.7”; holds 20 oz. White. Laser-engraved Dell Technologies logo.