The YETI Yonder 750ml Water Bottle features a 750ml or 25oz plastic body that is lightweight and perfect for backpacking. It also comes with a 100% leakproof Yonder™ Tether Cap that is always attached. The bottle is made from BPA-Free 50% recycled plastic, excluding the Yonder™ Cap, and is 50% lighter than Rambler® Bottles. Additionally, it is compatible with all Yonder™ accessory caps and the large Bottle Sling, both of which can be purchased separately.