Rab Strata Flex Jacket
Rab Strata Flex Jacket

Versatile Mid-Layer for the Mountains

Field-tested by Rab athletes in Arctic Norway and other harsh conditions, the Strata Flex Jacket is built for technical climbing, mountaineering, and other fast-and-light pursuits. It features Polartec Alpha synthetic insulation for warmth, Pertex Microlight outer fabric for wind and water resistance, and Polartec Power Stretch side panels for breathability and freedom of movement. A full-length front zipper, hidden zippered hand pockets, thumb loops, and a chin guard keep the cold out. Finally, thanks to its slim, form-fitting design, you can wear this jacket over a baselayer or a lighter mid-layer.

Note: At checkout, you’ll have your choice between Men’s S – XXL in Ebony or Maya, and Women’s XS – XL in Jam or Merlin.

Rab Strata Flex Jacket
Rab Strata Flex Jacket
Rab Strata Flex Jacket
Rab Strata Flex Jacket

About Polartec Alpha

Originally developed for the US Special Forces as an advanced insulating material in combat uniforms, Polartec Alpha regulates your core body temperature during both dynamic and static activities. Thanks to its superior breathability, you won’t need to shed or add layers when you’re on the move. Plus, it’s lightweight, fast-drying, and highly packable.

Rab Strata Flex Jacket
Rab Strata Flex Jacket
Rab Strata Flex Jacket

The History of Rab

Rab was founded by Scottish mountaineer Rab Carrington in 1980s—but the seed for the company was planted much earlier. In 1973, Carrington found himself in Buenos Aires, his expedition to Patagonia aborted due to a UK dock strike that had delayed the arrival of his equipment. He decided to stick around, and took up work sewing sleeping bags for the Argentinian army. Today, those skills and ethos of adventure can be seen in Rab’s full line of performance clothing, sleeping bags, mountaineering tents, and extreme expedition gear.

Rab Strata Flex Jacket

Style Options

Mens Ebony
Mens Maya
Womens Jam
Womens Merlin


Rab Strata Flex Jacket
Rab Strata Flex Jacket


  • Rab
  • Fabric, outer: Pertex Microlight
  • Fabric, lining: Mesh
  • Fabric, side panels and cuffs: Polartec Power Stretch with Hardface technology
  • Insulation: 2 oz (57 g) 60g/m² Polartec Alpha synthetic
  • Slim fit
  • 2 zippered hand pockets
  • Thumb loops
  • Chin guard
  • Weight, Men’s L: 12.9 oz (365 g)
  • Weight, Women’s M: 10.9 oz (310 g)
  • Final sale


All orders will be shipped by Massdrop.

Estimated ship date is July 22, 2016 PT.

After the drop ends, payment will be collected. To deliver the best value to the group the request will then be submitted to the vendor up front, making all sales final. Be sure to check the discussion page for updates.