Hispar 600 Down Sleeping Bag

Mountain lightweight for low temperatures and high peaks. Ideal for fast ascents and quick travel.
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.
-21°C / -5.8°F
Weight
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.
1040g / 37oz
Price
¥106,849.09
Hispar 600 Down Sleeping Bag
Hispar 600 Down Sleeping Bag
In use, Moonflower Buttress, Alaska
On top the Dru after 1st one day & free ascent of Lesueur route
Photo: Carnets D'Aventures
Zip & baffles (Photo: Carnets D'Aventures)
Footbox (Photo: Carnets D'Aventures)
Hispar 600 Down Sleeping Bag
With Jon Griffith (Lhotse and Everest in the background)
With Tenji Sherpa (Lhotse and Everest in the background)

The weight to warmth ratio is still the thing that shocks me the most compared to its competitors, it's light years ahead.
Jonathan Griffith's review after 2 months' use in Alaska.

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Features & Description
Technical info
Reviews

Features

  • Rare 950 fillpower European Goose Down
  • Water-resistant Drishell outer fabric
  • Superlight MX inner fabric
  • Box-wall construction for max loft
  • Short zip protected by double draft tubes
  • Pack size: 23 x 40 cm†
  • Straight-wall baffles for lightness
  • Side block baffles to prevent down shift
  • Extra down channels along each side ensure side insulation
  • Oval footpiece to fit naturally to feet and avoid pressure
  • Mummy hood draws up close around head
  • Collar seals in warmth at neck
  • Drishell inner panels at head to protect against breath soaking the down
  • Drishell panels at inner foot to cope with damp feet/footwear
  • Stuff sac with mesh storage bag
  • Colour: Gold top, black base
  • Options:
    • Waterproof HS2 outer fabric shell‡
    • Slim, Wide and Extra Wide widths*
    • Short, Long, and Extra Long lengths*
    • Full zip (left or right)
    • Further customisation available via our Design Your Own Sleeping Bag service

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

‡Please note: The optional HS2 outer is a complete extra outer shell, with seams taped for weatherproofness. The extra layer of fabric adds considerably to the weight and bulk of the basic bag. It increases the weatherproof qualities of the bag in mountain or Arctic situations, but it is not a substitute for a proper bivvy bag when sleeping out in the rain.

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

Description:

Ultralights for the mountains are the first words we put to the Hispar sleeping bags and it's hard to find a better way to describe them. Starting with our superlight MX inner fabric and the pared-down design features of the Minim range, we have added some of the extra elements from the Baltoro/Diamir bags to bring these new bags up to mountain specifications, while keeping weight to a minimum.

The combination of this design with the exceptional quality of our 950 down almost sends the new Hispar range off the scale for warmth/weight performance

  • The straight-wall baffle system (as used on the Minimus) is the lightest available.
  • The close-fitting mummy hood borrowed from the high-performance bags brings a snug protective feel.
  • A short zip with a double draft tube is standard on these bags (a zip is necessary with a mummy hood).
  • Side block baffles have been inserted to prevent down shifting between top and base.
  • The outer V baffle at each side protects the side seams and increases the inner/outer differential to allow the down full loft.
  • A simple internal collar completes the technical specifications.

The weights of the Hispar bags are graphic evidence of the effectiveness of this specific design. With the performance of our 950 down these bags deliver exceptional levels of warmth per gram.

Water-resistant Drishell outer fabric (weight: 54 gsm)

Ripstop nylon with an ultralight coating: achieves total windblock, along with high breathability and superior water resistance. Superbly efficient for a very light overall fabric weight.


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.


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.

Construction

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

Side V channels, and double draft tubes behind the zip optimise insulation.

More on sleeping bag construction.

Proofed inner panels

Proofed fabric (Drishell or Ultrashell) panels are included inside the hood and foot areas of the bag to help keep the down dry. In very cold temperatures your breath can cause ice to form around the face opening, which may soak into the down as it melts. The panels at the foot end are to protect the down if you get into your bag with wet socks (or in extreme situations with your boots on).

Waterproof HS2 outer fabric (weight: 88 gsm)

HS2 is PHD's high-spec 2-layer ripstop for waterproof outers on our down. It is light enough to be the optional taped shell on our sleeping bags and tough enough for expedition use in our Omega clothing. HS2 is completely waterproof (when the seams are taped) and offers excellent breathability.


"The weight to warmth ratio is still the thing that shocks me the most compared to its competitors, it's light years ahead."
— Jonathan Griffith's review of Hispar 600 after 2 months' use in Alaska.

"This bag has an unmatched warmth / weight ratio....The draft tubes undoubtedly provide the best insulation behind the zip of all the bags tested - not a trivial detail if you face harsh conditions."
— from Carnets d'Aventures Magazine's test of 18 sleeping bags for cold conditions.

"I have been warm at night in minus 25 degrees C with the Hispar 600 alone. The local people were very impressed that I was warm in such a light sleeping bag."
— Jeanette Lykkegard Nielsen using the Hispar 600 studying reindeer headers on the Kamchatka peninsula, Siberia.

"While my tent-mate suffered and shivered through the coldest parts of the nights, I was snugly sleeping in a PHD Hispar 600 with just my base layer and a thin liner. I gave him my PHD pullover and vest so he could get a good night's sleep and we could then both enjoy long days out ski mountaineering."
— Mike Smith, on Trip to Greenland's 'North Liverpool Land', April/May.

TRIP REPORT:

  • "Packs into an impressively small volume.
  • Recovers/Lofts well on unpacking.
  • Perfectly warm with a baselayer down to -20C.
  • Length and width fine without cold voids. I could just manoeuvre enough to put on or remove socks without unzipping."
— Mike Smith, on Trip to Greenland's 'North Liverpool Land', April/May.

 

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