Thirsty cyclists, hikers and runners will appreciate the 3-liter hydration reservoir in the Big Sur from Hydrapak. Hydrapak reservoir with quick-disconnect hose makes filling and cleaning a breeze no need to remove hose from pack. Reservoir turns inside-out to provide easy cleaning and complete drying. Insulated reservoir compartment keeps liquids at a constant temperature tube routing provides exit options at both shoulder straps. Padded back panel increases comfort molded shell maintains shape even when laden with gear. Adjustable padded shoulder straps feature sternum strap waistbelt is removable. Gizmo pocket stores media player, and earphones route through external port. Side compression straps let you cinch down loads for jostle-free carrying. Closeout.