Delta-Race 200 Down Sleeping Bag

Whisper-light 4°C bag. Featuring 18g/m2 Vertex fabric & high lofting down with hoodless design & hybrid construction for minimum pack weight & maximum warmth.
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.
4°C / 39.2°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.
310g / 11oz
£432.00 £346.00
Delta-Race 200 Down Sleeping Bag


  • 20% off standard pricing
  • Only available until 30 June
  • Hoodless for lightness
  • Exceptional 950 fillpower goose down
  • 18g/m2 Vertex fabric throughout
  • Box-wall construction on the top for maximum loft
  • Stitch-through construction on the base for minimum weight
  • Pack size*: 13 x 21cm
  • Oval footpiece: fits naturally to feet and avoids pressure
  • Stretch cord with cordlock at the shoulder
  • Stuff sac & mesh storage bag supplied
  • Options:
    • 4 different widths for the perfect fit: Slim, Std, Wide and Extra Wide†
    • 4 different lengths for the perfect fit: Short, Std, Long and Extra Long†
    • Zip options:
      • Full zip (left or right)
      • Short zip (left or right)
      • Foot zip (left or right)

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

† Please note: For all length and width options we change the amount of downfill to keep the warmth (TOT) the same.


The Delta-Race 200 is the lightest 4°C sleeping bag PHD have ever made. Created for self-support ultra-runners, elite mountain marathon racers, lightweight backpackers – anybody who demands every ounce of performance from the kit they carry. This whisper-light bag packs into a pocket-sized stuff sac, taking up a minuscule amount of space in your rucksack.

At just 310g, the Delta-Race 200 is the lightest bag that’s suitable for desert races such as the Marathon des Sables.

Using 18g/m2 Vertex fabric and 950 fillpower goose down (our rare, exceptionally high-grade insulation) allows us to create a superbly lightweight bag, and the specialist dual-construction design and neck length dimensions make this the most extreme example of its kind.

The top of the bag uses box-wall construction to allow optimum down lofting, and stitch-through construction on the base sheds excess bulk, working with your ground insulation mat to deliver the incredible weight saving performance. 

As with all PHD sleeping bags, the Delta-Race 200 is made to order, so we can offer plenty of options. To begin with, a combination of 4 different lengths and 4 different widths allows you to get the perfect fit. A perfect fit is important primarily because poor sizing compromises insulation, but it also means that you carry only what’s necessary.

Half- and full-length zip options allow greater flexibility in varying temperatures, while the foot-zip option is the ultra-light way to cool warm feet. Of course, to maintain minimum weight and pack size we’ve selected super-light zips.

For the midsummer months we're launching our Vertex Collection: the lightest Down Vest, Jacket, Shorts, and Sleeping Bags in their class. Only available May and June at never to be repeated prices.

Ultralight Vertex fabric (weight: 18 gsm)

Breathtakingly light at 18 gsm, Vertex is the ultimate in technical fabrics for extreme weight saving. This fabric is down-proof and superbly wind-proof and represents a high-point in the development of lightweight technical fabrics. The result of years of evolution and testing, this whisper-light fabric opens up new possibilities at the pinnacle of lightweight gear design

Sleeping bag zips

  • No zip: The standard design on our lightest bags with open hoods. The simplest/lightest system which is a must for adventure racers. Up to 140gm (5oz) lighter than a full zip with draft tube.
  • Full zips: Full zip bags ventilate well, so they can be used over a wider range of temperatures.
  • Short zips: Short zips are lighter and pack smaller than full zips. A short zip & draft tube is up to 85gm (3oz) lighter than the full version.
  • Our full briefing on sleeping bag zips.

950 fillpower down

A newcomer to our range. European goose of rare quality. A high value alternative at the top levels of performance. More on our down insulation.


This bag has an insulating straight wall baffle system on top (no straight-through stitching). Straight wall is the lightest of all baffle sytems. In cross section it looks like this:

On the bottom stitch-through seams are used to minimise weight. More on sleeping bag construction.

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