Four Season Insulation Kit

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The Osprey Four Season Insulation Kit features full insulation coverage of the reservoir, hose and bite valve that's made of closed cell foam wrapped in reflective fabric keeps the entire hydration system from freezing in the winter and from getting too hot in the summer.
Brand
Osprey Packs
Features
  • Fits up to a 3L reservoir
  • Heat-reflective, closed-cell foam sleeve offers maximum insulation
  • Tailored insulated reservoir sleeve with attachment loops
  • Insulated hose protected from direct sunlight
  • Zippered bite valve insulation sleeve helps keep mouthpiece free of ice
  • Removable bite valve sleeve for summer use
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