Quokka Solid - Tiny Tulips 630 ml BPA-Free Stainless Steel Water Bottle, Double Wall Thermal Bottle - Keeps Cold and Heat. This bottle is made of the highest quality 304 stainless steel, resistant to rust, inside and out. It maintains the flavor and purity of your favorite drinks, offering a healthy, reusable, and sustainable alternative to disposable plastic bottles. 100% BPA Free. High-quality anti-drip cap that prevents accidental spills and maintains temperature. The double-wall vacuum insulation keeps the interior temperature independent of the exterior, maintaining drinks cold for up to 18 hours and hot for up to 12 hours. Easy care: completely corrosion-resistant without loss of quality. Free of condensation. Does not absorb odors or flavors. To clean the water bottle, rinse and dry well after use (not suitable for dishwasher or microwave). With the purchase of a Quokka bottle, you are acquiring a unique design piece. All our bottles are patented and have undergone the necessary tests to offer the highest quality standards and comply with European regulations.