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Hydration pack

Thule Rail 12L Pro

This ultimate enduro-race hydration pack combines the Thule ReTrakt hose, a secure fit and a Koroyd back protector.



  • Stay hydrated without slowing down using the hands-free ReTrakt magnetic hose return system
  • User-friendly 2.5L HydraPak reservoir features a slide closure for easy cleaning and a locking bite valve to prevent leaks before and after your ride
  • Protect your central back and spine from impact or injury with removable, lightweight Koroyd CE certified Level 1 back protector
  • Superior stability for aggressive downhill riding and jumping with a secure fit
  • Improve bike handling and reduce muscle strain with optimal weight distribution thanks to the low center of gravity
  • Quickly store and retrieve pads, helmet or chin bar with easy-access lash points
  • Easily access nutrition, clothing or tools without having to remove the pack thanks to lower-back jersey pockets
  • Keep tools, pumps, snacks and accessories organized in dedicated internal pockets
  • Store jacket or extra layers under exterior compression panel
  • Stay visible with reflective details and a light attachment loop

Technical specifications

Dimensions 8.3 x 7.1 x 17.3 in
Volume 12 L
Weight 2.25 lb
Reservoir capacity 2.5 L
Material Nylon
Color Obsidian
Model number 3203799


Thule BringIt! GuaranteeThule is dedicated to providing exceptional products that are quality tested and guaranteed against defects in materials and workmanship.

View warranty details


Amazing fit!


Hugs torso and shoulders providing awesome comfort and stability. The fit, along with small details inside and out (magnetic hose) make all the difference from other bags I have used over the years.




Awesome product one of the best hydro packs !!!


Best hydration pack on the market . Instantly loved it when trying for the first time . Doesnt move aroun when you ride . It also looms really cool got compliments on it and asked where did I get it .




One of the most stable bags to ride with


I use it for typical NE trail riding- lots of climbs followed by downhills. even over the rocks and roots the pack is one fo the most stable I've ever used.

AZ in NY




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