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The Rab Infinity 300 Sleeping Bag is big on warmth, not on weight. This flyweight wonder weighs in at only a pound and a half, yet insulates amazingly effectively thanks to high-grade, high-loft goose down insulation and the featherweight Pertex Quantum GL fabric.

  • Light weight and high warmth-to-weight ratio makes this bag a great choice for high-altitude summer treks, adventure racing, or anytime you want to go light
  • Super high-loft 850-fill down insulation delivers the best warmth-to-weight ratio on the planet
  • Lightweight Pertex Quantum GL fabric optimizes the down's position in place around the body for more efficient warmth
  • Dry bag compression stuff sack keeps your bag compact and protected from nasty weather
  • Anti-snag zipper tape won't leave you stuck in your bag when nature calls late at night
  • Trapezoidal baffle-chamber design with angled foot box ensures even, full loft with no cold spots
  • Internal collar with hooded drawcord lets you seal in warmth
  • Mummy design for maximum thermal efficiency
  • Hand-filled in Derbyshire, UK by Rab's team of down experts

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Here's what others have to say...

Could you please double-check the reported...

Could you please double-check the reported Shoulder/Hip/Foot circumference measurements ... 27.5"/20.5"/16" doesn't sound right.


Hello - thanks for the question!

These are the correct specs as published by RAB.

Check out this page I found on their website: