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Gregory Endo 15 Hydration Backpack

Item # GRE009V

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  • Carbon Black, One Size ($129.95)
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Item # GRE009V


Your new best friend on the bike.

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

Tech Specs

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

Size Chart

Gregory Packs

Frame Sizes
Torso Length 14 - 16in
(35 - 39cm)
16 - 18in
(40 - 44cm)
18 - 20in
(45 - 49cm)
20 - 22in
(50 - 54cm)
How to Measure Your Torso:
Using a flexible tape measure or Gregory Fit-O-Matic, measure the length of your torso from the C7 vertebra (at the base of your neck) to the spot on the spine level with the top of the bony hip structure called the iliac crest. Do it two or three times to get an accurate measurement. If you are between frame sizes, always go with the smaller size.

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