Mountain Equipment Company

Polar Bottle Breakaway Muck Insulated 590ml Water Bottle



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Rocksolid guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, electronics, undergarments and swimwear excluded).
Really. If it's not up to snuff after you use it (a couple times) you can still bring it back. It lasts longer than 30 days, but not forever. We'll be fair about it.


Stop mud in its tracks. This water bottle packs multiple layers of insulation into a lightweight, flexible bottle to deliver thirst-quenching cool water when you need it. The muck guard protects the self-sealing valve to stop mud getting into your precious liquid.

  • Triple-layered insulation keeps your water cooler for longer
  • Finger grooves and ultra-light material for extra grip and easy squeeze
  • Muckguard™ protects valve from mud and dust build up
  • Spill-proof nozzle is self-sealing to prevent leaks
  • Removeable valve system is easy to clean and prevents grunge buildup

Tech specs

Ideal for
  • Mountain biking
  • Cycling
  • Gravel riding
  • Bikepacking
  • LDPE (low-density polyethylene)
  • 590ml
Lid type
  • Sport cap
  • Flip-top
Water filter compatibleNo
Made inUSA

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4 out of 5 stars with 5 reviews for Polar Bottle Breakaway Muck Insulated 590ml Water Bottle

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