Extreme Series
Hiking/Trekking socks made with high-tech special technical fibers, such as Lycra®, Thermolite® Base and Coolmax®.  Perfect for extreme cold or extreme hot weather conditions thanks to its high content of Thermolite®Base or Coolmax® respectively. These socks are made for high mountain trekking or for the desert.
 
Everest
K2
Pirineos
Extreme Cold Double Sock
Extreme Cold
Extreme Heat
Ideal for:  Alpine expeditions > 6500m (ie. 8000ers in combination with Elbrus liner socks)
Ideal for:  Alpine expeditions > 6500m
Ideal for:  Desert treks & ultra-endurance events
     
Cross Mountain
Elbrus
Sahara
Extreme Heat
Extreme Cold
Extreme Heat
Ideal for:  Desert treks, ultra-endurance & adventure racing
Ideal for:  Alpine expeditions & Base Camp treks above 5000m
Ideal for:  Desert treks & ultra-endurance events. Can be worn alone as hot weather socks.

Technical Specs

Sock Sizing
size S M L XL
feet size EU 31-35 EU 36-40 EU 41-45 EU 46-49
  Comfort
Temp		 Merino
Wool		 Cool
max		 Polya
mide		 Acrylic Thermo
lite		 Cordura Elastanne Lycra X-Static Cotton
 
%
%
%
%
%
%
%
%
  
%
Warm Weather
Cross Mountain
28C
75
4
6
5
10
  
Pirineos
25C
80
15
5
  
Andes
25C
33
22
2
12
3
28
Trail Running
25C
68
24
3
5
  
Kilimanjaro
25C
66
17
6
11
  
Sahara (Liner)
25C
75
10
3
12
  
Cycling/Running
18C
70
22
8
  
Roller Blading
15
67
15
8
10
  
 
Cold Weather
Ripple
-5
20
80
 
Arctic
-8
30
18
50
2
 
Explorer
-10C
32
15
10
32
6
5
  
Himalaya
-20C
35
5
35
15
5
5
  
Elbrus (Liner)
-25C
10
75
3
12
  
K2
-28C
15
80
5
  
Everest (double sock)
-30C
inner
25
outer
8
inner
68
outer
78
inner
-
outer
-
inner
-
outer
14
inner
7
outer
-