Built for day-to-day use, to be used again and again, at home or out and about. Just take me, use me, and fill me. Double-walled, vacuum insulated, bottle keeps drinks cold for 24hrs or hot for up to 12hrs. 100% Leakproof. No leaks or spills with screw top lid with watertight silicone seal. Made from high-quality 18/10 stainless steel, with no metal taste. 40mm wide spout to allow for ice cubes to keep things extra cool, as well as provide easier access for cleaning brushes.