Hot or cold, enjoy your drink at the ideal temperature for hours on end; This wide mouth bottle uses Thermo 3D double-wall vacuum insulation, making it perfect for sipping on-the-go Each bottle is made with medical-grade stainless steel and a durable Hardshell powder coat finish; Choose from a variety of colors and sizes to match your style No spills, no sweat; Twist on the threaded lid for leak-free performance and avoid cold drink condensation With design, generosity, and sustainability at our core, every MiiR product sold helps fund non-profit organizations that protect the planet and strengthen communities Every MiiR product is designed in-house and emphasizes four design principles: minimal, sustainable, functional, and enduring