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  • 100 fl. oz. Antidote™ reservoir features a welded center baffle and low-profile shape for stability
  • Quick Link™ system lets you effortlessly add accessories such as a Fresh™ filter, insulated tube, tube director, flow meter or hanger (accessories sold separately)
  • Hydration compartment loads easily, holding the reservoir flat against your back to leave more room for layers and gear
  • Wide-mouth port cuts weight and makes it easy to fill and clean the reservoir; quick-snap cap tightens in just a quarter turn
  • Folding arms lock into position to hold the reservoir open when drying; arms tuck out of the way around the port when not in use
  • Reservoir is taste free, easy to clean and easy to fill via the large opening
  • Big Bite™ valve is ergonomically positioned for easy drinking
  • Main compartment holds lunch or gear with a center zip expansion for additional cargo
  • Back panel with breathable mesh keeps fresh air flowing across the back for enhanced ventilation and comfort
  • Hipbelt features 2 stash pockets to accommodate snacks and often-used small essentials
  • Reflective accents enhance visibility in low light
  • The CamelBak Octane 18X hydration pack is assembled in the U.S. of domestic and foreign components


View all CamelBak Daypacks

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Best Use Hiking, Running
Frame Type Frameless
Gear Capacity (L) 21 liter
Gear Capacity (cu. in.) 1,198 cubic inches
Weight 18 ounces
Fits Torso 17 - 21 inches
Fits Waist/Hips Up to 48 inches
Material(s) Polyurethane-coated ripstop nylon/nylon taffeta
Number of Exterior Pockets 3 + main compartment
Hipbelt Yes
Bite Valve Shut-Off Switch Yes
Quick Disconnect Tubing Yes
Wide-Mouth Opening Yes
Dimensions 18 x 10.5 x 8.5 inches
Gender Unisex
Liquid Capacity (fl. oz.) 100 fluid ounces
Weight - Metric 0.51 kilogram
Liquid Capacity (L) 3 liter
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