Rondoy Down Jacket

A lightweight mountaineers' and trekkers' Jacket for the 6000m Himalayan peaks, the high Andes, and the Winter Alps. Now also available in custom sizes.
Typical Operating Temperature
Guideline minimum temperature. Sleeping Bag TOT: you should get a night’s sleep, under normal circumstances. Clothing TOT: you should feel warm enough, assuming low/moderate activity. Sleep System TOT: relates to full system. For more details, see our Technical Briefing.
-20°C / -4°F
For clothing, weight is for size: M. For sleeping bags, weight changes with selected length/width. N.B. there may be some variation in the weights of finished products.
620g / 22oz
Rondoy Down Jacket

The jackets were incredibly warm and light, equally suited to ensure we were warm when climbing and even when static, melting snow, in the advance camps.
Jonathan Phillips, Imperial College, Obra Valley Expedition (GARHWAL HIMALAYA, INDIA).



  • Exceptional 900 fillpower European Goose down
  • Ultrashell outer: water-resistant & totally windproof
  • Inner fabric: Superlight MX
  • Box-wall construction for maximum loft
  • Pockets:
    • 2 waist level hand warmer pockets
    • 1 zipped chest pocket
    • 1 large zipped internal security pocket
  • Full-length two way zip protected by storm baffle
  • Internal draft baffle and beard guard behind zip
  • Elasticated inner back for snug fit
  • Adjustable velcro cuff tabs
  • Zip-off helmet hood with cord adjustment and volume reducer
  • Fleece-lined collar
  • Elasticated adjustable draw-cord hem
  • Clip loop for securing
  • Reflective tape (for night location) on chest and on the clip loop
  • Stuff Sac
  • Packed Size: 17 x 28cm*
  • Option: Charcoal, Red & Charcoal

*Please note: We make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the jacket to the tightest minimum.


Redesign: The Rondoy Jacket has been upgraded with two specific changes to meet the needs of a wider spectrum of mountaineers, climbers, and high-altitude trekkers. Insulated hand warmer pockets have been added at waist level while still retaining a large insulated stash pocket at chest level for quick access while on the move. Additionally the baffle-covered front zip has been upgraded to a full length two way zip for easy access and adjustment to a climbers’ harness and rope system.

A lightweight mountaineering and trekking jacket, the Rondoy is designed for climbing, mountaineering, and trekking in the Himalayan six-thousanders, Alpine winters, as well as Andean peaks from Rondoy through to Fitz Roy.

Box-wall construction is used to achieve the -20°C temperate rating.  The water- and wind-resistant Ultrashell outer fabric gives excellent protection to the down in damp, snowy conditions. 

Two hand-warmer pockets at the waist, one chest pocket for stashing and quick access to your camera, a helmet-compatible hood, and adjustable Velcro cuffs make this an exceptionally high-specification mountaineering Jacket.

Also available in custom sizes. We make clothing to order, so if you’re not a standard size we can make it to fit. To order a non-standard custom size, select the Custom Sizing tab, choose your body width, and then the body/arm lengths, shorter or longer, that work for you. A custom size takes us a little longer (typically two weeks longer) to make and, because it’s personalized, it’s non-returnable and our customer loyalty scheme can’t be applied.

Ultrashell (weight: 40 gsm)

One of the lightest of PHD's coated materials. This ripstop nylon provides complete wind block and good water resistance at minimal weight. Ultrashell gives an excellent upgrade to performance with very little weight penalty.

Superlight MX fabric (weight: 32 gsm)

A mini-ripstop nylon with excellent tear strength, MX is the pick of the superfine 15 denier downproof materials. We have tested lighter fabrics, but most have had significant drawbacks, while our confidence in MX is based on several years of extensive use in both our ultralight and our high mountain gear.

900 Fillpower Down

European goose down of very high quality. A truly excellent down with large clusters, consistent quality and lively long-term performance. More on our down insulation.

Waterproof HS2 outer fabric (weight: 88 gsm)

HS2 is a 2-layer laminate, a high-spec option for the outer layer of our insulated gear. This ripstop fabric strikes an excellent balance between lightness and durability. It is light enough for our Belay tops and tough enough for expedition use in our Omega clothing, while the Kappa clothing makes full use of both its qualities. HS2 is completely waterproof (when the seams are taped) and offers excellent breathability. (Weight: 88gsm).

"The jackets were incredibly warm and light, equally suited to ensure we were warm when climbing and even when static, melting snow, in the advance camps."
Jonathan Phillips, Imperial College, Obra Valley Expedition (GARHWAL HIMALAYA, INDIA).

"I summited Elbrus with the help of your Rondoy jacket - made the 17 hour summit day very comfortable indeed!"
— Leigh Peterson.

"Tweaked for this year with two waist-level hand-warmer pockets making it a little more versatile than it's harness-friendly predecessor. Good news for high altitude trekkers taking in the night sky from outside the tea house we reckon. There's also a new two-way main zip to allow for easier use with a climbing harness."
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