This innovative and ultra-sleek design offers reliable, leakproof performance. While the insulated stainless steel construction keeps your beverages the perfect temperature for hours on end. This new design features a nesting handle, providing easy-to-carry convenience, and it stows away seamlessly when closed. The 25oz capacity is light enough to make carting it around a breeze, and large enough to take you from adventure to adventure. Not to mention, the streamlined design fits perfectly into most hydration packs, backpacks, and cup holders. It's the perfect combination for fueling up on the go, so you can keep going longer.