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Alpine Ultra Down Jacket: K Series

Alpine Ultra Down Jacket: K Series

'K Series' version of our lightest climbers' down jacket with chest pockets and optional helmet-sized hood. Lighter and warmer than fleece. Warmth to weight at the limit of possibilities.
Typical Operating Temp:-10°C (14°F)
Weight:280g (10oz)
Price:£364.00

Available Options:

Size:
Outer Fabric:
Hood:

Features

  • A PHD K Series product: Ultimate warmth / weight ratio
  • PHD's Unique 1000 fillpower down
  • Water-resistant Ultrashell outer fabric (our lightest-ever proofed fabric)
  • Ultralight 10X inner fabric
  • Stitch-through for lightness
  • Front lightweight zip with internal draft baffle*****
  • 2 chest pockets (lightweight zips) above harness level
  • 1 internal security pocket
  • Lycra cuff
  • Double-exit shock cord hem
  • Drop-tail back
  • Reflect for night location
  • Clip loop for securing
  • Stuff sac
  • Packed size: 13cm x 21cm*
  • Option:
    • Down filled superlight zip-on hood

 

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

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...

The original Alpine Ultra has been acclaimed as the perfect Alpine Jacket, but it's won friends in the Himalayas too as the ideal example of light and warm. Now this K Series version is just as warm and a full 50gm lighter with all the features and capability of the original. Enough said.

Facing an early morning start, a cold wind high up, even an unexpected bivvy. Whenever you're going to need extra warmth on your peak, it doesn't come any lighter than the Alpine Ultra. It's lighter than fleece, much warmer, packs a lot smaller and has a 100% windproof outer too.

Chest pockets and a large (optional) hood allow harness and helmet use.

Note: The optional hood needs to be ordered at the same time as the jacket.

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.

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.

Sizing

Standard clothing sizing chart

Weight shown is for medium (M) size.

The PHD Sizing Chart below is based on measurements without clothing, exactly the way you would buy a shirt, a sweater or a pair of trousers. A 42" (107cm) chest means that your bare chest uninflated measures 42". Inside Arm is measured from armpit to wrist-bone and Inside Leg from crutch to ankle bone. If you find that you fall between (or across) these sizings, please contact us and we will quote you for modifications needed. Modifications cannot be made to sale items, bargain box items or other products not offered at full price. And if you are supplying us with your measurements, it is always useful for us to know your height, even when you are only buying a jacket.

Size Height Chest Waist Inside arm Inside leg
XS 155-163cm
(5'1"–5'4")
86cm
(34")
71cm
(28")
46cm
(18")
69cm
(27")
S 164-170cm
(5'5"–5'7")
91cm
(36")
76cm
(30")
48cm
(19")
72cm
(28.5")
M 171-178cm
(5'7"–5'10")
99cm
(39")
84cm
(33")
51cm
(20")
76cm
(30")
L 179-186cm
(5'10"–6'1")
107cm
(42")
91cm
(36")
53cm
(21")
80cm
(31.5")
XL 187-193cm
(6'2"–6'4")
114cm
(45")
99cm
(39")
56cm
(22")
84cm
(33")
XXL 194-201cm
(6'4"–6'7")
122cm
(48")
107cm
(42")
58cm
(23")
88cm
(34.5")
XXXL 202-209cm
(6'8"–6'10")
130cm
(51")
114cm
(45")
61cm
(24")
91cm
(36")

N.B. PHD clothing is unisex and made in standard sizes S / M / L and XL, with XS available on Minimus, Sigma, Ultra, and Yukon jackets, vests and pullovers as standard, and on certain other items on request. XXL & XXXL are available for certain items on request, and so are simple modifications between sizes (e.g. Medium width combined with Large length). Please contact us for details.

Allowances:

  • Down Jackets, Pullovers, Vests, Down Suits: sized to fit over thermal underwear & fleece.
  • Down Trousers & Salopettes: sized to fit over thermal underwear &/or climbing trousers.
  • Shell Jackets: sized to go over a down jacket (e.g. Yukon Jacket). To cover thicker down clothing go up one size; to cover base layer & fleece clothing, go down one size.
  • Shell Trousers & Salopettes: sized to fit over thermal underwear &/or outdoor trousers.
  • Shell Suits: D-type suits will fit over down clothing of the same named size; F-type suits will only fit over thermals and fleece.

Reviews

Comments relate to standard Alpine Ultra, which weighs 50g more

"Packs to nothing."
Petesy (a.k.a. Peter Macfarlane).

"It's the perfect alpine downie - 330g and rated to -10 degrees - it blows the competition out of the water. Whilst the weight is awesome, you also get a tiny packed size out of it meaning that your down jacket won't eat up half your backpack space so you can go with a small backpack (20L) and keep a light and fast rhythm to your climbing."
Jon Griffith.

"I used the Alpine Ultra Jacket as a belay jacket and emergency outer layer in the Indian Himalaya - I found it to be excellent. It's lighter and packs down smaller than any comparable jacket, and its warmth to weight ratio is second to none. There is no other jacket that I would've preferred to have with me."
Virgil Scott - Imperial College Reru Valley Expedition (Zanskar Himalaya, India).

"Thank you for the fantastic equipment. Everything (including the Alpine Ultra Jacket) was above and beyond what was required and fended off the elements perfectly."
Graham B., on a trip to Aconcagua.

Features

  • A PHD K Series product: Ultimate warmth / weight ratio
  • PHD's Unique 1000 fillpower down
  • Water-resistant Ultrashell outer fabric (our lightest-ever proofed fabric)
  • Ultralight 10X inner fabric
  • Stitch-through for lightness
  • Front lightweight zip with internal draft baffle*****
  • 2 chest pockets (lightweight zips) above harness level
  • 1 internal security pocket
  • Lycra cuff
  • Double-exit shock cord hem
  • Drop-tail back
  • Reflect for night location
  • Clip loop for securing
  • Stuff sac
  • Packed size: 13cm x 21cm*
  • Option:
    • Down filled superlight zip-on hood

 

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

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...

The original Alpine Ultra has been acclaimed as the perfect Alpine Jacket, but it's won friends in the Himalayas too as the ideal example of light and warm. Now this K Series version is just as warm and a full 50gm lighter with all the features and capability of the original. Enough said.

Facing an early morning start, a cold wind high up, even an unexpected bivvy. Whenever you're going to need extra warmth on your peak, it doesn't come any lighter than the Alpine Ultra. It's lighter than fleece, much warmer, packs a lot smaller and has a 100% windproof outer too.

Chest pockets and a large (optional) hood allow harness and helmet use.

Note: The optional hood needs to be ordered at the same time as the jacket.

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.

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.

Sizing

Standard clothing sizing chart

Weight shown is for medium (M) size.

The PHD Sizing Chart below is based on measurements without clothing, exactly the way you would buy a shirt, a sweater or a pair of trousers. A 42" (107cm) chest means that your bare chest uninflated measures 42". Inside Arm is measured from armpit to wrist-bone and Inside Leg from crutch to ankle bone. If you find that you fall between (or across) these sizings, please contact us and we will quote you for modifications needed. Modifications cannot be made to sale items, bargain box items or other products not offered at full price. And if you are supplying us with your measurements, it is always useful for us to know your height, even when you are only buying a jacket.

Size Height Chest Waist Inside arm Inside leg
XS 155-163cm
(5'1"–5'4")
86cm
(34")
71cm
(28")
46cm
(18")
69cm
(27")
S 164-170cm
(5'5"–5'7")
91cm
(36")
76cm
(30")
48cm
(19")
72cm
(28.5")
M 171-178cm
(5'7"–5'10")
99cm
(39")
84cm
(33")
51cm
(20")
76cm
(30")
L 179-186cm
(5'10"–6'1")
107cm
(42")
91cm
(36")
53cm
(21")
80cm
(31.5")
XL 187-193cm
(6'2"–6'4")
114cm
(45")
99cm
(39")
56cm
(22")
84cm
(33")
XXL 194-201cm
(6'4"–6'7")
122cm
(48")
107cm
(42")
58cm
(23")
88cm
(34.5")
XXXL 202-209cm
(6'8"–6'10")
130cm
(51")
114cm
(45")
61cm
(24")
91cm
(36")

N.B. PHD clothing is unisex and made in standard sizes S / M / L and XL, with XS available on Minimus, Sigma, Ultra, and Yukon jackets, vests and pullovers as standard, and on certain other items on request. XXL & XXXL are available for certain items on request, and so are simple modifications between sizes (e.g. Medium width combined with Large length). Please contact us for details.

Allowances:

  • Down Jackets, Pullovers, Vests, Down Suits: sized to fit over thermal underwear & fleece.
  • Down Trousers & Salopettes: sized to fit over thermal underwear &/or climbing trousers.
  • Shell Jackets: sized to go over a down jacket (e.g. Yukon Jacket). To cover thicker down clothing go up one size; to cover base layer & fleece clothing, go down one size.
  • Shell Trousers & Salopettes: sized to fit over thermal underwear &/or outdoor trousers.
  • Shell Suits: D-type suits will fit over down clothing of the same named size; F-type suits will only fit over thermals and fleece.

Reviews

Comments relate to standard Alpine Ultra, which weighs 50g more

"Packs to nothing."
Petesy (a.k.a. Peter Macfarlane).

"It's the perfect alpine downie - 330g and rated to -10 degrees - it blows the competition out of the water. Whilst the weight is awesome, you also get a tiny packed size out of it meaning that your down jacket won't eat up half your backpack space so you can go with a small backpack (20L) and keep a light and fast rhythm to your climbing."
Jon Griffith.

"I used the Alpine Ultra Jacket as a belay jacket and emergency outer layer in the Indian Himalaya - I found it to be excellent. It's lighter and packs down smaller than any comparable jacket, and its warmth to weight ratio is second to none. There is no other jacket that I would've preferred to have with me."
Virgil Scott - Imperial College Reru Valley Expedition (Zanskar Himalaya, India).

"Thank you for the fantastic equipment. Everything (including the Alpine Ultra Jacket) was above and beyond what was required and fended off the elements perfectly."
Graham B., on a trip to Aconcagua.

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