EVERYDAY HYDRATION: The 621 ml (21 oz) Standard Mouth Bottle is the perfect size for daily use, offering enough capacity for hours of refreshment without bulk. IDEAL TEMPERATURE CONTROL: TempShield double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours, with no condensation on the outside. LEAKPROOF WHEN CLOSED: The Standard Flex Cap seals tightly for a secure, leakproof experience, making it reliable for travel, commuting, and outdoor adventures. DURABLE STAINLESS STEEL: Built from high-quality stainless steel for long-lasting performance; dishwasher safe for easy cleaning after every use. CUPHOLDER COMPATIBLE: Designed to fit most car cupholders, this bottle is perfect for on-the-go hydration wherever life takes you.