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PHD K Series: 1000 Down

The K Series 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. See our range of K Series Clothing too.

Filler Down Sleeping Bag: 'K Series'
A lightweight liner that boosts your sleeping bag's warmth by 10°C. On its own, the lightest of sleeping bags. A PHD 'K Series' product: warmth to weight at the limit of possibilities.
from ¥44,183
240g
15°C
M.Degree° 100 K Down Sleeping Bag
Superlight 10°C bag. Featuring our lightest fabrics & highest lofting down with hybrid construction for minimum pack weight & maximum warmth.
from ¥51,644
240g
10°C
Hispar Down Overbag: K Series
Warmth to weight taken to the limit. 'K Series' version of a bag used to boost the warmth of your existing sleeping bag by 24°C. Can be used as a stand-alone too.
from ¥100,654
710g
-6°C
Minim Ultra Down Sleeping Bag: K Series
Warmth to weight at the limit of possibilities with the upgraded 'K Series' edition of this mountain marathon runners' and extra-keen backpackers' favourite.
from ¥51,205
330g
+8°C
Minimus Down Sleeping Bag: K Series
Warmth to weight at the limit of possibilities with this 'K Series' version of our classic lightweight bag. Minimalist design cuts weight, but not warmth.
from ¥58,813
380g
+5°C
M.Degree° 200 K Down Sleeping Bag
Superlight 4°C bag. Featuring our lightest fabrics & highest lofting down with hybrid construction for minimum pack weight & maximum warmth. Optional waterproof foot cover.
from ¥61,592
340g
4°C
M.Degree° 300 K Down Sleeping Bag
Superlight -3°C bag. Featuring our lightest fabrics & highest lofting down with hybrid construction for minimum pack weight & maximum warmth. Optional waterproof foot cover.
from ¥71,541
445g
-3°C
Minim 400 Down Sleeping Bag: K Series
Warmth to weight at the limit of possibilities with this 'K Series' version of our classic lightweight bag. Minimalist design cuts weight, but not warmth.
from ¥73,882
585g
-5°C
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.
from ¥98,899
655g
-9°C
Hispar 500 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this mountain lightweight for cold conditions. Ideal for fast ascents and quick travel.
from ¥110,018
770g
-15°C
M.Degree° 400 K Down Sleeping Bag
Superlight -9°C bag. Featuring our lightest fabrics & highest lofting down with hybrid construction for minimum pack weight & maximum warmth. Optional waterproof foot cover.
from ¥81,489
550g
-9°C
Hispar 600 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this mountain lightweight for low temperatures and high peaks. Ideal for fast ascents and quick travel.
from ¥124,794
885g
-21°C
Diamir 900 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this high-specification expedition bag, cut roomy enough for stashing kit and for comfort at altitude.
from ¥160,930
1570g
-32°C
Hispar 800 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this high altitude and expedition lightweight. Ideal for moving fast in extreme environments.
from ¥147,032
1100g
-33°C
Hispar 1000 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this expedition lightweight. Ideal for cutting loads or for moving fast in extreme environments.
from ¥169,415
1315g
-46°C
Diamir 1200 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this high-specification expedition and polar bag, cut roomy enough for stashing kit and for comfort in extreme environments.
from ¥189,459
1880g
-48°C
Hispar 1200 Down Sleeping Bag: K Series
Warmth to weight taken to the limit with our 'K Series' version of this polar lightweight. Ideal for cutting loads or for expeditions that plan on moving fast in extreme conditions.
from ¥192,385
1560g
-58°C