Rab Microlight Summit Down Jacket

143g of 750 Fill Power Down (US Method) / Pertex Quantum Infinity Weave Shell / Hydrophobic Down
Weighs 440g (Medium size)
Code: AW18119
  • Now £172.99
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Worn as a warm midlayer or standalone outer for fast ascents in the likes of Chamonix, the Microlight Summit is a streamlined technical jacket for when weight is a concern but function is paramount.

Rab says:

Streamlined 750 fill goose down jacket made from innovative Pertex® Quantum Infinity Weave™ , eliminating the need for stitching to further enhance wind and weather resistance. Functions as a warm mid layer or stand-alone piece for cold conditions.

Constructed with cutting edge Pertex® Quantum Infinity Weave™  fabric, the Microlight Summit Jacket eliminates the need for stitch through baffles, reducing weight and increasing weather resistance. Filled with 750 fill power ethically-sourced hydrophobic down, it combines warmth with increased wind and weather resistance.

Perfected for moving fast in alpine environments, the Microlight Summit features a slightly longer fit in the body, harness-compatible hand pockets, and a two-way front zip with an insulated zip baffle and chin guard to maximise comfort. Stretch nylon cuffs fit easily over gloves, while the helmet-compatible hood features an internal stretch gaiter to seal out wind. Internal stretch-bound hood seams reduce hood volume when worn without a helmet.

Inspired by decades of experience in the mountains, the Microlight Summit is a truly alpine jacket: lightweight and packable, while offering increased durability, warmth and weather resistance.

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Rab have celebrated 10 years of the original Microlight Jacket by introducing the Microlight Summit - a high spec, technical, mountain jacket which takes the good from the Microlight and adds the best from modern technical outdoor clothing design. This jacket is packed with features, adding useful functionality to the jacket.

The hood is designed to fit over a helmet and for backpackers this makes it slightly less usable as it is quite large. Stretch seams in the roof of the hood are there to lessen the volume for use without a helmet, but they don't go quite far enough to do so adequately. The adjustment is good, with a cord going around the face of the hood and a velcro tab at the rear, the cord adjusters are hidden away inside the jacket making them a bit fiddly to use on the fly. The peak and "internal stretch gaiter" work well.

The Pertex Quantum fabric is beautifully silky and will easily go on over any layering piece you might be wearing. Overall, the Microlight Summit is an innovative twist on the ever-popular Microlight Jacket, with lot's of new features and a hood that is aimed towards climbers.

- Reviewed by Ultralight Outdoor Gear

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Help and advice:
 All about down filling in sleeping bags
  • Pre baffled seamless build Pertex® Quantum Infinity Weave™ fabric
  • 750FP R.D.S. Certified European Goose Down (143g/5oz in size L)
  • Rab® Fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax®
  • Stretch nylon cuff allowing sleeves to be rolled up
  • Full helmet compatible hood with laminated brim and flexible polymer peak
  • Internal stretch bound hood seams to reduce hood size when worn without a helmet
  • Internal stretch hood gaiter to seal out wind and improve fit around face
  • 2 way YKK® VISLON® front zip with insulated zip baffle and chin guard
  • YKK® VISLON® harness compatible hand pockets
  • Internal YKK® reverse coil zipped pocket
  • Tonal outer branding
  • Stuff sack
  • Long length
  • Small weighs: 408g
  • Medium weighs: 440g
  • Large weighs: 446g
  • XLarge weighs: 474g
  • XXLarge weighs: 500g
  • Fit: Slim


  • Pre baffled seamless build Pertex® Quantum Infinity Weave™ fabric
  • 750FP R.D.S. Certified European Goose Down (143g/5oz in size L)
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