PHD Mountain Software

Hispar 500 Down Sleeping Bag

Down Quality: 900
Outer Fabric: Drishell
Weight: 890g (31oz)
Typical Operating Temperature: -15°C (5°F)
Colour: Gold top, black base
Construction: Boxed with straight-wall baffles
Hispar 500 Down Sleeping Bag
Hispar 500 Down Sleeping Bag

Click to enlarge

Available Options:


Options explained

Further Information

Now available in Slim, Wide, and Extra Wide Widths and Extra Long length!

We've just made this bag available in these new sizes to accommodate heights up to 7 foot 1 inch (216 cm) and chests up to 56 inches (142 cm). See 'sizing' tab above for more information.

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 bags up to mountain specifications, while keeping weight to a minimum.

"The Hispar 500 is my favourite of the bags tested."
Chris Townsend, Winter Down Sleeping Bags test, TGO Magazine.

The combination of this design with the superlative quality of our 900 down almost sends the Hispar range off the scale for warmth/weight performance

The straight-wall baffle system (as used on the Minimus) is the lightest available, while 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), and 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 added performance of our 900 down these bags deliver the greatest possible warmth per gram.

Picture shows Hispar 600, Hispar 500 is slimmer.

Winter Down Sleeping Bags test,
TGO Magazine.

  • Lightweight, water-resistant Drishell outer fabric
  • Side block baffles to minimise down shift
  • Oval footpiece
  • Inner: superlight MX fabric (black)
  • Mummy hood with drawcord
  • Collar
  • Short zip (left)
  • Double draft tube
  • Stuff sac
  • Pack size: 20 x 34cm*
  • Options:
    • Slim, Wide and Extra Wide widths.
    • Short, Long, and Extra Long lengths.
    • (For all length or width options, we change the amount of downfill to keep the warmth (TOT) the same.)
    • Full zip (left or right)
    • Taped waterproof outer in HS2 fabric.‡ Find out more about this fabric.

*Please note: we make our stuff sacs big enough to allow fairly easy stuffing rather than reducing the bags to the tightest minimum. What air is left in the packed item will easily be compressed out of it, if you are squashing it into a small space in your rucksack. Tiny stuff sacs look impressive: but unless you are a sac-wrestling fan, fighting the gear into them day after day can be an unnecessary chore.

‡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 (around 180gm - 6oz). 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.

"The lightest bag tested yet warmer than some ... The Hispar 500 really does deserve the description 'Ultralight' ... The loft really is astonishing for such a lightweight bag ... the Hispar 500 is my favourite of the bags tested"
Chris Townsend, Winter Down Sleeping Bags test, TGO Magazine.

"I used a Hispar 500 Down Sleeping Bag on the Imperial College Reru Valley expedition. The Hispar 500 has an excellent temperature range, and was comfortable both on a glacier at 5700m and at basecamp on the valley. It packed small, was incredibly light and hugely versatile." Jonathan Moodie - Imperial College Reru Valley Expedition team leader (Zanskar Himalaya, India)

"The Hispar 500s were very warm, light and packed with relative ease. Even with condensation and freezing on the outer surface of the bag (-20°C), very comfortable sleeping temperatures were maintained in the bag.." Jonathan Phillips, Imperial College, Obra Valley Expedition (GARHWAL HIMALAYA, INDIA)

"Thank you for the fantastic equipment. Everything (including the Hispar 500 down sleeping bag) was above and beyond what was required and fended off the elements perfectl" Graham B, on a trip to Aconcagua.

"I'm very pleased with my Hispar 500" Jake L

"It gives a nice snug fit without being too restrictive. What really impressed me was the amount it lofts, the 900 down appears to really do its job. Once out of its bag it grows and grows and grows! It's amazing that such a light bag can be so fat. I was sad enough to weigh it with it coming in at 935 grammes with stuff sack, pretty light for a -15C rated bag with a water resistant shell. I can be an outdoor shop customer from hell inspecting every seam and stitch of everything I buy (usually being pretty unimpressed by the poor construction of kit these days and often finding fault). However so far I have not found even so much as a loose thread." Review at Backpackingbongos.

Width Chest
Slim 78 - 92cm (31" - 36")
Standard 93-107cm (37" - 42")
Wide 108-125cm (43" - 49")
Extra Wide 126-142cm (50" - 56")
Sizes and Weights

The given weight for this bag assumes standard length and width. Choosing different width and / or length options will change the bag's weight in these ways:

Length / Width Option % Weight Change
Long +9%
Extra Long +15%
Short -7%
Slim -7%
Wide +10%
Extra Wide +19%

Note: these figures are approximate and assume the standard half zip. Adding a full length zip adds 85g.