<p>Award winning design makes the best combination of strength and flexibility. Designed specifically to be portable, insulated, and easy to carry for those sports, fitness, and outdoor adventure enthusiasts who like to constantly push their limits further and longer. It doesn't matter where you are, it's always a great idea to keep an extra lid for your water bottle. </p><ul><li>Unique Honeycomb Insulation Technology, Flexible Handle for Easy Grip Quality: </li><li>BPA Free</li><li>Dishwasher Safe </li><li>Please note that the Hydro Flip lid does not fit on the older style Wide Mouth flasks. </li><li>To find out which style flask you have and whether the Hydro Flip will fit yours, check out the Hydro Flip Fit Guide. </li><li>Please note that the Hydro Flip Lid is not leak proof.</li></ul>