The Avana Ashbury 18-Ounce and 24-Ounce Stainless Steel Double-Wall Insulated Water Bottles combine classic design with effortless functionality for your daily hydration needs. These bottles feature a patented drinking system, incorporating the innovative FreeSip spout, designed to offer two distinct drinking methods: you can either sip upright through the removable built-in straw or tilt back to take a swig from the wide-mouth spout opening. Their double-wall insulation ensures your beverages stay cold for as long as 24 hours or hot for up to 12 hours, all while preventing condensation and heat transfer to the bottle's exterior. This makes the bottle suitable for a wide range of drinks, including water, juice, carbonated beverages, tea, and coffee. The included leak-proof twist cap boasts a flexible carry loop for convenient on-the-go hydration. You can choose from two sizes, 18-ounce and 24-ounce, to suit your preferences. Plus, these bottles are made from BPA and phthalate-free materials and are designed for hand washing.