Womens WarmLife Pant

Rene is 5'7'' and wears a women's small.

Womens WarmLife Pant

Size Guide

Lightweight, versatile, and remarkably warm

Inspired by our MegaWarm jacket, the LifeLabs design team created an even lighter pant to complete our ultra-packable set for the coldest seasons. Cold weather commutes? Layer them over pants. Late fall football games and winter hikes? This is the answer: a meeting-to-mountain layer that out-performs on warmth, lightness and comfort. 

Our feather-light, next-gen WarmLife fabric reflects virtually all of your body heat back to you, resolving weightlessness and breathability with incredible warmth. Structured by tapering and zippers for a bit of geariness, the WarmLife pant combines performance with hints of street style. An easy-access cargo pocket houses your phone or your Metrocard, while three-quarter side zips allow effortless on/off action over traditional pants or baselayers (without having to take your shoes off). Fully taped waterproofing protects from blustery elements from street to slope.

Sustainability Index

We make every effort to reduce this product’s impact on the earth. 

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Global Warming Potential

7% fewer CO2 emissions

Sustainable Packaging

We reduce our environmental footprint by choosing our packaging wisely. That means no hangtags or swift tacks and no conventional plastic. When we do use packaging, we choose 100% compostable alternatives made from the bio-based polymer PBAT and the plant-based polymer PLA.

Water Pollution

2% less water pollution

Fossil Fuel Depletion

17% less fossil fuel depletion

Chemical Impact

10% reduced chemical impact

Water Use

9% less water usage


Compared to products that use non-recycled polyester. Based on Higg MSI 3.2 data at Higg.org Percentage reductions pertain to the finished material phase.


Womens WarmLife Pant


CLO Rating

  1. The standard measurement of how warm a textile keeps you (the higher the CLO, the warmer you are).
  2. The degree of insulation provided by an article of clothing. 
  3. LifeLabs CLO levels are significantly higher than materials almost 30% heavier. 

Infrared Radiation

  1. A type of electromagnetic radiation produced when atoms absorb and then release energy with a frequency lower
than visible light.
  2. Thermal energy your body is producing all the time. 


  1. The measure of an object's ability to emit infrared energy (heat by radiation).
  2. A low-emissivity material (like aluminum) acts as a radiant barrier and decreases 
the amount of infrared radiant heat
 that escapes. 

Higg Index

  1. A tool for the apparel and footwear industry to assess the environmental impacts of raw materials and the lifecycle impacts of products.
  2. The industry-leading value chain measurement methodology developed by the Sustainable Apparel Coalition.


  1. A regular organic or inorganic framework supporting a porous structure.
  2. A nano-scale cell structure that allows body heat to escape through pores to maximize comfort.


  1. Perfluorinated chemicals, or a subset of perfluorinated chemicals called perfluorocarbons are traditionally used in textile manufacturing to provide water repellency.
  2. LLD uses PFC-free water repellent finishes to lower or impact on the environment and human health.


  1. Large molecules made by bonding (chemically linking) a series of building blocks.
  2. Polymers are chains of chemically bonded atoms.


  1. A material that conducts infrared heat away from your skin at a higher, more efficient rate.
  2. Polyethylene has a low Materials Sustainability Index rating compared to conventional synthetic fibers used in apparel today.

QMax Index

  1. Measurement of thermal transport.
  2. A higher Qmax value indicates a faster tranfer of heat from the body to the fabric surface, resulting in a cooling effect.
  3. A measure of predicting the warm/cool feeling of fabrics.  


  1. The return of light, sound or heat from a surface.
  2. A reflective fabric or material reflects the body's heat back to itself.


  1. A type of homeostasis and a means of preserving a stable internal temperature in order to survive.
  2. Thermoregulation is the maintenance of a relatively constant core body temperature.


  1. Allowing the passage of a specified form of radiation.
  2. Honest and open; without secrets or deceit. Transparency in materials means that the textile barrier blocks natural elements (like rain and sunlight) and allows other to pass through (like persperation and body heat.)

Sizing & Fit

Waist 28 30 1/2 33 36 40
Inseam 28 28 1/2 29 29 1/2 30
Front Rise 9 3/4 10 10 1/4 10 1/2 10 7/8
Thigh 27 28 1/4 29 1/2 31 1/4 33 1/2
Leg Opening 9 1/2 10 10 1/2 11 11 3/4

Relaxed jogger-style fit.

Waist 71.2 77.4 83.8 91.4 101.6
Inseam 71.1 72.4 73.7 74.9 76.2
Front Rise 24.8 25.4 26 26.7 27.6
Thigh 68.6 71.8 75 79.4 85
Leg Opening 24.2 25.4 26.6 28 29.8

Relaxed jogger-style fit.