Rab Flux Pants

Weighs 172g (Medium size)
Code: AW20167
  • £41.99
  • (FREE Delivery on orders over £15)
  • RRP £44.99
+ In Stock Now | Usually dispatched within 24 hours

A mid weight baselayer pant, with a brushed back providing quick drying warmth. Designed for use in cold weather with a slim fit; also great as a stand alone lightweight legging.

Rab says:

Invest in versatility with a warm baselayer pant that doubles as a lightweight legging. Built from soft jersey knit fabric, our Flux Pants come with built-in stretch for the ultimate all-day comfort.

The Flux Pant is a fresh, flexible, fast-wicking midweight baselayer pant for active mountain sport. It is built from 175g/m² Thermic™ single jersey knit fleece with a brushed back and smooth flatlock seams for outstanding comfort next to the skin, as well as reduced friction under a shell pant during cold-weather climbs. The integrated Polygiene® STAYS FRESH treatment uses silver salt technology to reduce odour-causing bacteria by 99%, however many times you sweat. The pants also feature a broad, elasticated waistband, keeping them safely in position when you layer up, without any unwanted weight, bulk or slip.

With its comfortable quick-drying warmth, its easy care and its modest weight, our Flux Pant is among the most versatile and hardworking mountain baselayers you can buy.

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Rab's 2020 Flux Pants are a mid- to heavy-weight baselayer and they provide quite a bit of additional warmth. With flatlocked seams throughout and elasticated fit waistband the Flux pants are really comfortable to wear - when its cold you won't want to take them off.The Thermic fleece fabric is soft and comfortable when on but the performance is particularly impressive as they wick moisture really well and are fast drying.

They are best suited to use as a baselayer for your sleeping bag in particularly cold conditions but they also work well under a shell pant in winter too.

- Reviewed by Ultralight Outdoor Gear

  • Thermic™ single jersey knit with brushed back
  • Polygiene® Stays Fresh Technology
  • Low profile and comfortable flatlock seams
  • Low bulk waistband with drawcord
  • Small weighs: 162g
  • Medium weighs: 172g
  • Large weighs: 186g
  • XLarge weighs: 200g


  • Main Fabric: Thermic brushed back lightweight fleece, 175g/m²
  • Composition: 94% polyester/6% elastane
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