Mountain Source 27oz Thermos Stainless Steel BPA-free Insulated Water Bottle (Black) VACUUM INSULATION - double walled vacuum insulated water bottle allows you to keep your beverage cool up to 24 hrs or hot for up to 12 hrs. You can practice yoga, go to the gym, work outside or travel anywhere and enjoy your delicious drinks by the time you need it. Stay hydrated wherever you go! SAFE MATERIALS - the Mountain Source water bottles stainless steel are made from high quality and safe materials. Your favorite beverage will be clean and healthy. The best choice even for your kids! EASY TO USE - lightweight and portable, the best stainless steel water bottle is truly leak proof. No leaks in your work bag or backpack! 2 leak-proof caps designed for easy and comfy using. The hot drink cap quickly turns into a mug and lets you drink hot coffee. The sports cap lets you easily refresh yourself with a cool drink PERFECT GIFT - looking for the ideal gift? Our water bottles (stainless steel) come in three color options - blue, black and red. Stylish design and pretty packaging of water bottles (insulated) will be a very impressive gift for each sport-lover or traveler. Let your friends be healthy & hydrated! LIFETIME GUARANTEE - caring about the buyer, we designed stainless steel water bottle 27 oz for long-lasting use. If for any reason you're not completely satisfied with the Mountain Source product, please let us know and send it back for a full, no-questions-asked refund