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Ultra Down Vest: K Series

Ultra Down Vest: K Series
Ultra Down Vest: K SeriesUltra Down Vest: K Series. Side view showing drop tail.Ultra Down Vest: K Series. Back view showing drop tail.In Blue Ultrashell fabric.Burnt Orange UltrashellUltra Down Vest: K SeriesGreen UltrashellPurple UltrashellRed Ultrashell fabric

For Alpine and winter stuff we use PHD's Ultra Down Vests. These are the best lightweight kit on the market.
Phil Newby, registered BAIML International Mountain Leader.

Ultra Down Vest: K Series

Our lightest sub-zero down vest. A 'K Series' product. Warmth to weight at the limit of possibilities for extra-keen lightweight backpackers and mountain racers.
Typical Operating Temp:-5°C (23°F)
Weight:150g (5oz)
Price:£211.00

Available Options:

Size:
Outer Fabric:
Hood:

Features

  • A PHD 'K Series' Product: Ultimate warmth / weight performance
  • PHD's Unique 1000 fillpower down
  • Water-resistant Ultrashell outer fabric (our lightest-ever proofed fabric)
  • Ultralight 10X inner fabric
  • Full width front handwarmer pocket
  • Stitch-through for lightness*****
  • Small zipped security pocket
  • Short lightweight (No.3) front zip - pullover style
  • Elasticated side hem
  • Drop-tail back
  • Stuff sac
  • Pack size: 10 x 18cm*
  • Options:
    • Burnt Orange, Charcoal or Blue colours
    • Stud on hood with Lycra edging: Adds 35grms

 

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

Our Wafer Vest recently took over the title of the lightest bit of down clothing we had ever made. Now the K Series Ultra Vest has come down to a similar astonishing weight, yet it remains a genuine piece of mountain gear whose warmth will surprise you. A water-resistant outer (Ultrashell fabric) has been added, while 1000 down and 10X inner fabric reduce the weight to a minimal 150gm.

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 are for previous version of this vest, which weighed the same, but didn't have a water-resistant outer fabric

"For Alpine and winter stuff we use PHD's Ultra Down Vests. These are the best lightweight kit on the market."
Phil Newby, registered BAIML International Mountain Leader.

"I bought an ultra down vest from you a couple of months ago and used it at Easter when I was camping in the Cairngorm's. I was really impressed how light and yet warm it was, despite the temperature dropping to -10 overnight and there being a couple of foot of snow!"
John H.

"Just got my Ultra Vest. I wanted to say a big 'thank you' for designing such a fantastic piece of kit. It just felt 'right' as soon as I took it out of the parcel. I put it on (on this chilly July morning ...) and I felt immediately warmer. It is the most astonishing piece of kit I've ever owned (and I have an awful lot of stuff, let me tell ya). Beautifully designed, perfectly executed (not a stitch out of place). It's just breathtaking."
W.P.

"So small and light that you cannot possibly not have it with you at all times! It is comfy and, when, at first I put it on I could not believe that it would keep me warm. How wrong I was. It is unnoticeable as a physical layer but highly noticeable as a warm layer. Peter Hutchinson has become a god of light and warm clothing in my book."
Jeremy Hastings, Islay Bushcraft.

"I've been meaning to write to say what a tremendous bit of kit this Ultra vest is. I have to say the warmth to weight ratio is sensational. Top quality bit of outdoor clothing and it's been a pleasure to deal with your company."
Mark H.

"Thanks for the Ultra vest ... a really amazing piece of kit. This must be pretty much the best warmth/weight ratio insulation piece in the world. I was glad to see your quoted weight matched the actual weights precisely. This garment is set to become an instant classic."
Alex Haxeltine.

"Just a quick note to say I have just completed the Marathon des Sables and found your new ultravest to be the perfect wear for the colder mornings."
John Moorhouse.

"I couldn't believe the warmth to weight performance of that little beauty [the Ultra Down Vest]. It fitted my requirements perfectly. Many thanks and congratulations on making such fantastic products."
Edward Fowler.

"Stuffs tiny. I'm wearing it now as the heating is being weird, lovely and warm and silky."
'Kesh' on Live for the Outdoors forum.

"I am so pleased with it! Tested that very evening ... I was like toast, and again the vest came up trumps whilst out in the woods last weekend. Once again thank you very much for a superb bit of kit!"
Andrew Jones.

"In a way it's a shame that the Ultra vest is as nice as it is! In the interim I'd ordered myself a Mountain Hardwear Below Zero jacket but I'm afraid that it feels second rate compared to the PHD vest. I fear that I'm going to have to return the MH and get myself a Hispar!"
Marcus.

"Ultra Vest arrived today. It is a sensational product. Thank you for it. It was worth waiting for. Please thank the artist who made it for me!"
Adam from Hobart, Tasmania.

More...

Features

  • A PHD 'K Series' Product: Ultimate warmth / weight performance
  • PHD's Unique 1000 fillpower down
  • Water-resistant Ultrashell outer fabric (our lightest-ever proofed fabric)
  • Ultralight 10X inner fabric
  • Full width front handwarmer pocket
  • Stitch-through for lightness*****
  • Small zipped security pocket
  • Short lightweight (No.3) front zip - pullover style
  • Elasticated side hem
  • Drop-tail back
  • Stuff sac
  • Pack size: 10 x 18cm*
  • Options:
    • Burnt Orange, Charcoal or Blue colours
    • Stud on hood with Lycra edging: Adds 35grms

 

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

Our Wafer Vest recently took over the title of the lightest bit of down clothing we had ever made. Now the K Series Ultra Vest has come down to a similar astonishing weight, yet it remains a genuine piece of mountain gear whose warmth will surprise you. A water-resistant outer (Ultrashell fabric) has been added, while 1000 down and 10X inner fabric reduce the weight to a minimal 150gm.

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 are for previous version of this vest, which weighed the same, but didn't have a water-resistant outer fabric

"For Alpine and winter stuff we use PHD's Ultra Down Vests. These are the best lightweight kit on the market."
Phil Newby, registered BAIML International Mountain Leader.

"I bought an ultra down vest from you a couple of months ago and used it at Easter when I was camping in the Cairngorm's. I was really impressed how light and yet warm it was, despite the temperature dropping to -10 overnight and there being a couple of foot of snow!"
John H.

"Just got my Ultra Vest. I wanted to say a big 'thank you' for designing such a fantastic piece of kit. It just felt 'right' as soon as I took it out of the parcel. I put it on (on this chilly July morning ...) and I felt immediately warmer. It is the most astonishing piece of kit I've ever owned (and I have an awful lot of stuff, let me tell ya). Beautifully designed, perfectly executed (not a stitch out of place). It's just breathtaking."
W.P.

"So small and light that you cannot possibly not have it with you at all times! It is comfy and, when, at first I put it on I could not believe that it would keep me warm. How wrong I was. It is unnoticeable as a physical layer but highly noticeable as a warm layer. Peter Hutchinson has become a god of light and warm clothing in my book."
Jeremy Hastings, Islay Bushcraft.

"I've been meaning to write to say what a tremendous bit of kit this Ultra vest is. I have to say the warmth to weight ratio is sensational. Top quality bit of outdoor clothing and it's been a pleasure to deal with your company."
Mark H.

"Thanks for the Ultra vest ... a really amazing piece of kit. This must be pretty much the best warmth/weight ratio insulation piece in the world. I was glad to see your quoted weight matched the actual weights precisely. This garment is set to become an instant classic."
Alex Haxeltine.

"Just a quick note to say I have just completed the Marathon des Sables and found your new ultravest to be the perfect wear for the colder mornings."
John Moorhouse.

"I couldn't believe the warmth to weight performance of that little beauty [the Ultra Down Vest]. It fitted my requirements perfectly. Many thanks and congratulations on making such fantastic products."
Edward Fowler.

"Stuffs tiny. I'm wearing it now as the heating is being weird, lovely and warm and silky."
'Kesh' on Live for the Outdoors forum.

"I am so pleased with it! Tested that very evening ... I was like toast, and again the vest came up trumps whilst out in the woods last weekend. Once again thank you very much for a superb bit of kit!"
Andrew Jones.

"In a way it's a shame that the Ultra vest is as nice as it is! In the interim I'd ordered myself a Mountain Hardwear Below Zero jacket but I'm afraid that it feels second rate compared to the PHD vest. I fear that I'm going to have to return the MH and get myself a Hispar!"
Marcus.

"Ultra Vest arrived today. It is a sensational product. Thank you for it. It was worth waiting for. Please thank the artist who made it for me!"
Adam from Hobart, Tasmania.

More...

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