Source Outdoor Widepac Hydration System Reservoir with Helix Bite Valve<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Hydration reservoir with wide opening for easy filling， cleaning， draining， and ice insertion </span></li><li><span class="a-list-item"> Taste-free reservoir with maintenance-free Glass Like liner prevents bio-film build-up </span></li><li><span class="a-list-item"> Grunge Guard Technology inhibits bacteria growth on the reservoir and drinking tube surfaces </span></li><li><span class="a-list-item"> Rounded Helix bite valve delivers a full flow with just a soft bite; built-in safety shutoff mechanism </span></li><li><span class="a-list-item"> Slide closure with airtight seal; 3-liter capacity (100 ounces) </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41hwqlEzO5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41FQqBUGM6L.jpg" noproxy>