The T3+ Inferno Expedition Polartec is the ultimate sock for high altitude expedition use. Designed for hard shell mountaineering footwear and extended cold weather activities in extreme environments, the T3+ Inferno Expedition Polartec has been sewn and designed with specific left and right foot anatomical shapes for precise fit.
Based on feedback we received from professional mountaineers, we learned that most wool socks on the market were too constrictive. This can be dangerous in parts of the world where a wet foot can lead to hypothermia. Our design team wanted to solve this problem by creating a sock that would be incredible warm and dry. We searched the globe to find materials and a construction process that provide the perfect combination of elasticity, support, and warmth. We found that perfect combination in POLARTEC® POWER STRETCH and PRIMALOFT®.
On the one hand, POLARTEC® POWER STRETCH was developed to expand our base fabric’s durability and range of motion. By using elastic fibers with enhanced resilience in Polartec® stretch construction we made a performance fit base fabric that can handle the pressure of demanding physical activities. Two Layers of POLARTEC® POWER STRETCH on the outer layer of the sock provide warmth without increasing weight. The smooth outer layer is wind- and abrasion-resistant; the soft inner layer pulls moisture away from your skin keeping you dry, warm and comfortable.
PRIMALOFT® yarn is made up of ultra-fine polyester fibers which are finer than cashmere, resulting in a luxuriously soft feel while providing unparalleled moisture wicking. When hiking, climbing or doing any aerobic activity, your body works up a sweat and emits heat and perspiration, but when you suddenly sit idle, you can easily start to freeze with an insulation that absorbs water. PRIMALOFT® fibers wick moisture away from the skin and trap body heat.
Tested above 8,000 meters by athletes in real world conditions, the T3+ Inferno Expedition Polartec is the ultimate sock for high altitude expedition use. This sock has been designed for hard shell mountaineering footwear and extended cold weather activities in extreme environments.
Heavily insulated and designed for high altitude climbing.
Performs like a traditional sock (Stays up on your foot, fits snuggly).
Left foot and right foot anatomical design for a precision fit that ensures better blood and nerve flow.
Hand sewn in Spain to maintain the highest quality in every pair.
POLARTEC® POWER STRETCH provides elasticity, support, and warmth.
PRIMALOFT® insulation is soft against the foot while working to trap body heat and wick moisture away from the foot.