CamelBak Octane 18X Hydration Pack<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"> This expandable pack is perfect for 3+ hours of any adventure </span></li><li><span class="a-list-item"> Antidote Reservoir features Quick Link System， easy open/close cap， lightweight fillport， dryer arms， center baffling and low-profile design </span></li><li><span class="a-list-item"> Key Pack Features: Ultra-light materials， center expansion zip， front and back reflectivity， safety whistle </span></li><li><span class="a-list-item"> Designed to carry extra layer， food， headlamp， trail maps， compass， trekking poles </span></li><li><span class="a-list-item"> CamelBak Got Your Bak Guarantee: If we build it， we'll Bak it with our lifetime guarantee </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51W2Wyra1wL.jpg" noproxy>