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  • It has the new lightweight and airy RidgeAir back panel, carries 3 liters of water and offers enough room to organize your riding essentials such as a light layer and a snack
  • RidgeAir back panel has ridged foam with ventilation channels and lightweight, moisture-wicking mesh to ensure cooling airflow and carrying comfort
  • 5-liter gear capacity is plenty of room for your lunch and tools
  • 3-liter Big Zip LP reservoir features a low-profile shape, a wide-mouth opening that closes securely and a quick-disconnect hose
  • Reservoir suspension hooks hold reservoir securely in place while you ride; dedicated hydration pocket makes it easy to access, clean and refill reservoir
  • Zip mesh pocket with key retainer, 3 mesh stash pockets, and 2 pump sleeves put bike tools, food and keys within easy reach
  • 2 webbing straps attach a helmet for secure carry
  • Reflective hits enhance your visibility to others when you're on the trail or traveling between rides
  • Attachment point for rear blinky light (light not included)
  • Magnetic hydration-hose retention system offers clip-free access to the bite valve
  • YKK zippers


View all Platypus Cycling Hydration Backpacks

REI membership


Best Use Mountain Biking
Frame Type Internal Frame
BPA Free Yes
Gear Capacity (L) 5 liters
Gear Capacity (cu. in.) 305 cubic inches
Reservoir Capacity (fl. oz) 100
Weight 1 lb. 6 oz.
Fits Torso 17 - 21 inches
Fits Waist/Hips 20 - 52 inches
Material(s) 160-denier polyurethane-coated nylon dobby, 210-denier polyurethane-coated nylon Oxford
Pack Access Top
Bite Valve Shut-Off Switch Yes
Quick Disconnect Tubing Yes
Wide-Mouth Opening Yes
Dimensions 18 x 7.5 x 4.5 inches
Gender Unisex
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