More Water = Healthier Kids Hydration is important to staying healthy, for all ages, especially little ones. Here's what we recommend. 2-3 years old At least 4 cups of water per day 4-8 years old At least 5 cups of water per day 10+ years old At least 7 cups of water per day Shop Now Shop Now THE COLDEST DIFFERENCE It's NOT just a water bottle. Our COLDEST Water bottles are designed to help you stay colder, longer. We designed the water bottles to stay cold up to 36+ to 100+ hours. COLD tested against 50+ leading brands. They're leakproof, ultra-durable, and fits everywhere. This is your last bottle. 36+ Hours Cold Leak-Proof Insanely Engineered 36+ Hours Cold Leak-Proof Insanely Engineered 100,000+ 5 Star Reviews and Counting FAQ How long does it stay cold? COLDEST bottles stay COLD 36+ hours. Some of our bottles like the 1-gallon can stay cold past 100+ hours. We are continuously improving and engineering COLDEST bottles to be colder every year. Does COLDEST bottles fit the Cirkul lids? Yes! All our wide mouth bottle fit CIRKUL bottles! These sizes include: 14oz, 18oz, 24oz, 32oz, 40oz, 64oz, Universal Shaker Series, Limitless Series (bottle with handle), Does it fit in a cupholder? Cup Holder Friendly? Size 12oz Fits 99% of cupholders 14oz Fits 80% of cupholders 18oz Fits 80% of cupholders 21 oz Fits 99% of a cupholders 32oz Fits 80% of cupholders 40oz Fits 80% of cupholders 64oz Half Gallon No 1 Gallon No 26 oz Universal Shaker Fits 99% of cupholders 36 oz Universal Shaker Fits 99% of cupholders 46 oz Universal Shaker Fits 99% of cupholders Is it Dishwasher Safe? We recommend hand washing to extend the lifespan of any COLDEST bottle. Dishwasher Safe Powder Coats Not Dishwasher Safe Glitter Patterns Glossy Paint Does it float? Yes! All COLDEST bottles float! What if I don't like it? Don't love what you bought? We're happy to accept returns with a valid order #. We offer the COLDEST Happiness Guarantee. Return or exchange your COLDEST product at anytime for a full refund*.*Return shipping is not included.