Made from stainless steel, the Chilly's Reusable Water Bottle - Stainless Steel 500ML keeps your water cold for up to 24 hours, even if the outside temperature is hot. Advanced double walled vacuum insulation will keep warm water a distant memory. Your Chilly's Bottle will keep hot drinks hot too - for up to 12 hours! The bottle's airtight screw top prevents leaks, and vacuum insulation ensures there's no condensation. With the freshness and flavour of your drink preserved, you'll wonder how you ever lived without it!