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CamelBak Antidote Lumbar Reservoir - 100 fl.oz.

This product is no longer available, but don't go just yet.


  • Anatomic shape of the reservoir places the weight close to your hips where your body can carry it efficiently
  • Low-profile fit with baffling helps keep water in place for increased stability and comfort on your run or ride
  • Bite valve is easy to use—just bite and sip; HydroLock™ valve shuts off water, preventing leaking during transport
  • Wide-mouth, easy-open cap makes cleaning and filling the reservoir a snap
  • Quick Link™ connection system allows easy disconnection of tube and allows integration of other CamelBak accessories (sold separately) into the Antidote Lumbar reservoir


View all CamelBak Reservoirs

REI membership


Best Use Running
Bite Valve Shut-Off Switch Yes
Wide-Mouth Opening Yes
Quick Disconnect Tubing Yes
Material(s) Polyurethane
Dimensions 12.5 x 11.5 inches
BPA Free Yes
Weight 7.2 ounces
Liquid Capacity (fl. oz.) 100 fluid ounces
Liquid Capacity (L) 3 liter

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We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

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*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more