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Gregory Endo 15 Hydration Backpack

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  • Horizon Blue, One Size

Endo 15 Hydration Backpack

Clean, compact, and built with all the features for a successful day on the trails, the Gregory Endo 15 Hydration Backpack boasts thoughtful organization for your tools, tubes, pumps, and extra layers, as well as a Shift RS (Ride Stability) suspension system that eliminates irritating jostling when riding at speed. This RS system lets you adjust the hipbelt vertically to sit either higher or lower on your back for an exact fit and bounce-free stability. 

EVAP moisture-wicking tech in the backpanel and shoulder straps serve up cool, breathable comfort through warm temps and intense rides. Gregory made access to water a priority by including a 3D Hydro reservoir, which uses soft-molded QuickDry technology for an anatomical fit on your back, and comes ready with a DryLock bite valve for easy sipping. Molded webbing keepers hush the flapping of your straps by storing them out of sight, and a safety light lash helps keep you visible when night riding. Multiple zippered pockets—one of which uses protective foam to defend against impact and weather—safely carry all of your mountain bike essentials through the entire ride.

  • Bike-ready hydration pack designed for all day on the trails
  • Adjustable suspension system customizes a bounce-free fit
  • Breathable shoulder straps wick sweat and keep you cool
  • Durable fabrics hold up through rough wear and tear
  • Magnetic sternum strap adjusts with one hand
  • Hydration reservoir is included to keep water close by
  • Multiple pockets safely stash all your riding gear
  • Item #GRE009V

65% polyester, 35% nylon
15L (915cu in)
Shift RS Vent Hydro
Shoulder Straps
Waist Belt
Hydration Compatible
Reservoir Included
yes, 3D Hydro
1 Crash Pad Protection, 1 quick-access, 2 hipbelt zippered, 1 stretch mesh
Weight Capacity
19.3 x 9 x 7.9in
Claimed Weight
Recommended Use
commuting, enduro, hiking, trail, trail running, travel
Manufacturer Warranty
limited lifetime

Tech Specs

What do you think about this product?


>Rating: 5

Versatile, Comfortable and Durable!

I've put it through the wringer

Gregory’s New Endo 15 checks all the boxes! Though this innovative hydration pack is earmarked as a Mtn Bike Hydration Pack...I found it perfect for hiking, scrambling, commuting and motorcycling. Additions like the removable tool kit pouch, protective crash pad zipper pocket for smartphones or eyepro and the magnetic sternum magnet that mates with the hydration bite valve, set this pack ahead of the rest. Thie feature-rich Endo 15 includes the EVAP moisture wicking mesh back support which allows ample airflow and ventilation for all day comfort. The Endo 15 snugs up tightly so no shifting or swaying occurs during riding street or trails. Pockets are plentiful, so storage is not an issue. Of great interest, the magnetic bite valve stayed fixed to the sternum strap magnetic button while cruising at 70 mph with no windscreen. As a product reviewer for TheDyrt dot com,,I logged several hundred miles on trails, both biking and hiking and I highly recommend the Gregory Endo 15!