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50 oz Reservoir

Current Stock:
Out Of Stock
Our reservoir is completely re-designed for this year.  We gave customers the new features they asked for: it won't leak, and it's much easier to fill and clean.

Specs & Details

  • The reservoir can removed and filled while leaving the hose threaded through the pack
  • Reservoir can be turned inside-out for easy cleaning
  • The opening automatically shuts off when the hose is removed
  • Smooth inside, for easier cleaning
  • Slightly smoother outside, to slip in and out of packs
  • BPA Free
  • Top closure is fold-over and slide-closed resulting in never leaking and opens fully for cleaning
  • Utilizes a Hypervalve Hose which incorporates an on/off bitevalve
  • Product Reviews


    Write A Review

    1. A practical, easy to clean, no frills bladder!

      This is a great product to add to your UD pack. 50oz is the perfect size to supplement the body bottles up front. I can keep tailwind, nuun, etc in the body bottles and sip on the bladder full of water too. Super versatile, easy to clean, easy to fill, and a great construction! It's even got "Ultimate Direction" printed on it. on Dec 12th 2016

    2. Best reservoir out there!

      I love my UD reservoirs! They are easy to clean and dry; I flip them inside out. I've never had one pop on me, and I use them regularly. Other brands have leaked -- UD never has!
      I love that they come in different sizes for different sized packs and for longer or shorter excursions. The 50 is the one I use most often.
      on May 20th 2016