Rab Flux Pull-On

Weighs 246g (Medium size)
Code: AW20166
  • £46.99
  • (FREE Delivery on orders over £15)
  • RRP £49.99
+ In Stock Now | Usually dispatched within 24 hours

Ideal for multi day climbing or long trekking trips, the Flux Pull-On can be worn as a midweight baselayer or lightweight fleece.

Rab says:

Practical both as a midweight baselayer and a lightweight fleece, our easy-pack Flux Pull-On is perfect for longer multi-day climbing and trekking trips when you want to stay warm, dry and active.

Our new Flux Pull-On provides versatile fast-wicking insulation. Designed to keep you dry when you work so you can stay warm when you stop, it is built from Thermic™ single jersey knit with a brushed back for outstanding comfort. It also uses low-profile flatlock seams to provide friction-free comfort next to the skin, even during extreme physical activity. The deep-venting YKK VISLON® half-zip enables you to adjust the warmth to match the activity and the unobtrusive thumb loops keep the layer secure and draught-free. To help with the repeated work-rest cycles of mountain recreation, it also features Polygiene® STAYS FRESH technology, which reduces odour-causing bacteria by 99% for the entire life of the garment.

Whether you're escaping for a weekend of bothy-hopping or moving fast from hut to hut, the new Flux Pull-On has the fit, the fabric and the features to keep you comfortable and fresh.

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Rab's 2020 Flux Pull-On can be worn as a midweight baselayer or a lightweight fleece. It's versatility means it's ideal for taking on longer trips when you're likely to encounter changing weather conditions but still want to keep the weight down. This simple, effective design is ideal as a warm, lightweight layer which can easily vent heat with the deep chest zip and has the benefits of classic fleece. 

The inside of the fabric has a super soft feel to it where as the outer is smooth so it's easy and comfortable to layer under another garment. The fabric has been treated with Polygiene permanent odour control meaning it can be worn on multiple days without the need for washing every time.

- Reviewed by Ultralight Outdoor Gear

  • Thermic™ single jersey knit with brushed back
  • Polygiene® Stays Fresh Technology
  • Deep venting YKK half zip
  • Low profile seams for next to skin comfort
  • Subtle and low profile thumb loops
  • Small weighs: 228g
  • Medium weighs: 246g
  • Large weighs: 260g
  • XLarge weighs: 282g


  • Main fabric: Thermic stretch fleece with brushed back, 175g/m²
  • Composition: 94% polyester/6% elastane
Showing our 1 review for Rab Flux Pull-On. Write a review ›
Review Summary - 5 out of 5 based on 1 rating.
March 1, 2021 | Guy Stephenson
Deceptively Snug!

I’ve been looking for a really lightweight fleece for a while to replace my much loved but rather tired TNF Polartec 100 1/2 zip pullover. The new TNF ones are heavier and just don’t fit as snugly. At first sight, The Rab Flux Pull-On just looked too thin and too light... but then I wore it as one of my layers to snowboard on the hills behind my house (over a Rab merino top and under my Rab Microlight down jacket) and I was toasty in -3! The fit is athletic- but forgiving of a slight winter belly. The length is good for tucking into a waistband and the sleeves have good reach for climbing- with or without thumb-loops on. I like the deep zip for ventilation and the soft odour-control fabric would make this perfect as a sleeping bag layer for colder nights. Definitely a good choice as part of my ultralight mission wardrobe for this year!

Ultralight Outdoor Gear Limited