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Hispar 400 Down Sleeping Bag: K Series

Hispar 400 Down Sleeping Bag: 'K Series'
Hispar 400 Down Sleeping Bag: 'K Series'In Blue Ultrashell with Charcoal Ultrashell contrastShowing collar and double draft tubeShowing short side zip. Full zip is optional.In Charcoal UltrashellTGO Magazine 'Recommended' in test of 3 season sleeping bags

By far the best warmth to weight ratio of all the bags tested
Chris Townsend, TGO Magazine's test of 3 season sleeping bags.

Hispar 400 Down Sleeping Bag: K Series

Warmth to weight taken to the limit with our 'K Series' version of this mountain lightweight for cool conditions. Ideal for fast ascents and quick travel.
Typical Operating Temp:-9°C (15.8°F)
Weight:655g (23oz)
Price:£584.00

Available Options:

Length:
Width:
Outer Fabric:
Zip:

Features

  • PHD 'K Series': Ultimate warmth/weight performance
  • Unique PHD 1000 fillpower Down
  • Outer: Ultrashell, our lightest-ever Water-resistant fabric
  • Inner: Superlight 10X, our lightest-ever downproof fabric
  • Box-wall construction for max loft
  • Short zip protected by double draft tubes
  • Pack size†: 20 x 34cm*****
  • 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
  • Stuff sac with mesh storage bag
  • 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

This K Series product has been created for one single reason, to take warmth-for-weight performance to the limit of what's possible. Unique 1000 down, super-light materials, and specific design features mean that the word Ultralight now applies to this wide range of gear that will take you to the Poles as well as on a Sahara Marathon. More on the K Series...

Ultralights for the mountains is what we have always called Hispar sleeping bags and even with the new K Series versions it's hard to find a better way to describe them. Perhaps 'Ultralightest' would be closer if it wasn't such an awful word.

The combination of this bag's design with the superlative quality of our 1000 down and our new fabrics, Ultrashell and 10X, almost send the Hispar K 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), 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 K bags are graphic evidence of the effectiveness of this specific design. With the added performance of our 1000 down these bags deliver the greatest possible warmth per gram.

Need this bag faster? Check out the 'Ready Made' version, which ships within 5 working days.

Technical

Ultrashell (weight: 40gsm)

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. Order samples of this fabric & just pay the postage.

Ultralight 10X fabric (weight: 26 gsm)

10X, PHD's First 10 Denier Fabric. 9,000 metres of the yarn used to weave 10X weighs just 10g, that's about the same as a £1 coin! For all its thinness 10X is amazingly downproof and with reasonable care will go on giving you good service for years. Order samples of this fabric & just pay the postage.

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 about 85gm (3oz) lighter than the full version.
  • Our full briefing on sleeping bag zips.

1000 Fillpower Down

This rarest of all downs we reserve for the K Series. European goose down of unique quality. 1000 provides the highest warmth-for-weight performance possible from down. 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.

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. Order samples of this fabric & just pay the postage.

Sizing

Hispar Sleeping Bag Size Charts

The measurements in the Sleeping Bag Chart below are personal body measurements.

Length Height
Short 170cm and below (5' 7" and below)
Standard 172-186cm (5' 8" - 6' 1")
Long 187-203cm (6' 2" - 6' 8")
Extra Long 204-216cm (6' 9" - 7' 1")

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

Reviews

"Amazing warmth for the weight. Very light and very warm the K Series Hispar 400 bag has by far the best warmth to weight ratio of all the bags tested. If you want the maximum warmth for the least weight...this is the bag to choose"
Chris Townsend, TGO Magazine's test of 3 season sleeping bags.

"I used my Hispar 400K on a three week trip to Everest Base Camp via Gokyo Ri and over the Cho La pass. With 18 nights in varied temperatures down to -1c at our tented camp at the base of Kala Patthar I can safely say this is a brilliant bag. Just 875g, mine is long and has a full length zip, it performed exceptionally well and for such low weight. Whilst not a test down to the rated -9c I am a 'cold' sleeper and I know I could have gone further down than -1c in comfort, trust me for me that is a testament to the bags warmth. Thank you PHD."
Rob Pinate

The reviews below relate to standard Hispar 400, which is 115g heavier

"This has to be the best sleeping bag I've ever used in every respect. It's warm as a very warm thing (good to -9). It's not cheap but then you get what you pay for when it comes to sleeping bags. PHD are a very small company but they beat the socks off the big guys."
Phil Newby, registered BAIML International Mountain Leader.

"I have a new Hispar 400 which is proving to be very good indeed."
Tim Rodgers.

"I have one of your Hispar Bags and think they are amazing."
Richard Bishop.

"In September, I had the opportunity to use my Hispar 400 bag in Iceland. The bag was so warm that I didn't need to close the zipper!"
Volker Junge.

"Having ordered a Hispar from you last month and testing it wild camping in North Wales to around -2 degrees, I have to admit that the bag is brilliant! I was toasty while my climbing partner shivered! Thank you for the excellent gear and hopefully my down jacket will be falling apart soon so I can justify replacing it with one of yours!"
Alistair Ross.

More . . .

Features

  • PHD 'K Series': Ultimate warmth/weight performance
  • Unique PHD 1000 fillpower Down
  • Outer: Ultrashell, our lightest-ever Water-resistant fabric
  • Inner: Superlight 10X, our lightest-ever downproof fabric
  • Box-wall construction for max loft
  • Short zip protected by double draft tubes
  • Pack size†: 20 x 34cm*****
  • 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
  • Stuff sac with mesh storage bag
  • 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

This K Series product has been created for one single reason, to take warmth-for-weight performance to the limit of what's possible. Unique 1000 down, super-light materials, and specific design features mean that the word Ultralight now applies to this wide range of gear that will take you to the Poles as well as on a Sahara Marathon. More on the K Series...

Ultralights for the mountains is what we have always called Hispar sleeping bags and even with the new K Series versions it's hard to find a better way to describe them. Perhaps 'Ultralightest' would be closer if it wasn't such an awful word.

The combination of this bag's design with the superlative quality of our 1000 down and our new fabrics, Ultrashell and 10X, almost send the Hispar K 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), 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 K bags are graphic evidence of the effectiveness of this specific design. With the added performance of our 1000 down these bags deliver the greatest possible warmth per gram.

Need this bag faster? Check out the 'Ready Made' version, which ships within 5 working days.

Technical

Ultrashell (weight: 40gsm)

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. Order samples of this fabric & just pay the postage.

Ultralight 10X fabric (weight: 26 gsm)

10X, PHD's First 10 Denier Fabric. 9,000 metres of the yarn used to weave 10X weighs just 10g, that's about the same as a £1 coin! For all its thinness 10X is amazingly downproof and with reasonable care will go on giving you good service for years. Order samples of this fabric & just pay the postage.

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 about 85gm (3oz) lighter than the full version.
  • Our full briefing on sleeping bag zips.

1000 Fillpower Down

This rarest of all downs we reserve for the K Series. European goose down of unique quality. 1000 provides the highest warmth-for-weight performance possible from down. 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.

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. Order samples of this fabric & just pay the postage.

Sizing

Hispar Sleeping Bag Size Charts

The measurements in the Sleeping Bag Chart below are personal body measurements.

Length Height
Short 170cm and below (5' 7" and below)
Standard 172-186cm (5' 8" - 6' 1")
Long 187-203cm (6' 2" - 6' 8")
Extra Long 204-216cm (6' 9" - 7' 1")

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

Reviews

"Amazing warmth for the weight. Very light and very warm the K Series Hispar 400 bag has by far the best warmth to weight ratio of all the bags tested. If you want the maximum warmth for the least weight...this is the bag to choose"
Chris Townsend, TGO Magazine's test of 3 season sleeping bags.

"I used my Hispar 400K on a three week trip to Everest Base Camp via Gokyo Ri and over the Cho La pass. With 18 nights in varied temperatures down to -1c at our tented camp at the base of Kala Patthar I can safely say this is a brilliant bag. Just 875g, mine is long and has a full length zip, it performed exceptionally well and for such low weight. Whilst not a test down to the rated -9c I am a 'cold' sleeper and I know I could have gone further down than -1c in comfort, trust me for me that is a testament to the bags warmth. Thank you PHD."
Rob Pinate

The reviews below relate to standard Hispar 400, which is 115g heavier

"This has to be the best sleeping bag I've ever used in every respect. It's warm as a very warm thing (good to -9). It's not cheap but then you get what you pay for when it comes to sleeping bags. PHD are a very small company but they beat the socks off the big guys."
Phil Newby, registered BAIML International Mountain Leader.

"I have a new Hispar 400 which is proving to be very good indeed."
Tim Rodgers.

"I have one of your Hispar Bags and think they are amazing."
Richard Bishop.

"In September, I had the opportunity to use my Hispar 400 bag in Iceland. The bag was so warm that I didn't need to close the zipper!"
Volker Junge.

"Having ordered a Hispar from you last month and testing it wild camping in North Wales to around -2 degrees, I have to admit that the bag is brilliant! I was toasty while my climbing partner shivered! Thank you for the excellent gear and hopefully my down jacket will be falling apart soon so I can justify replacing it with one of yours!"
Alistair Ross.

More . . .

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