100 Year Sweatpants

Chillout gear built to withstand wind, fire, rocks, and rain.

$595.00 $178

Model is 5ft 11 / 180cm with a 32 inch / 81cm waist, and wears size Medium.

  • Fire resistant, water repellent and windproof
  • Embedded with an abrasion resistant polymer coating
  • Five pockets, including three zipped pockets

Our 100 Year Sweatpants have always been tough. But these sweatpants are the softest and lightest version we’ve ever made. They’re super stretchy, fleece-lined, breathable, and they come with five pockets to store all your valuables. But the pants are also windproof, abrasion resistant, water repellent, fire resistant, and can withstand temperatures 4x hotter than the sun. So it’s fair to say they’re an upgrade.

The sweatpants combine 4 different layers of technology. The inside of the sweatpants are made from an incredibly dense fleece that’s 4x more windproof than a regular fleece, while the outside of the fabric is a blend of modacrylic and aramid fibres for fire resistance. On top of that there are two coatings. One is a fluorocarbon-free treatment that helps it shed rain and snow. The other fuses high strength polymers directly into the fibres to make the sweatpants highly abrasion resistant.

Technical Details

Material made in the US by Polartec: 46% lyocell, 37% modacrylic, 14% aramid, 3% elastane
Fire resistant
Water repellent and windproof
Coated with Polartec Hardface® for abrasion and snag resistance
Four-way stretch throughout
Breathable and high-wicking
Underside of the sweatpants is a soft fleece
Two open side pockets
Hidden water resistant zipped pocket inside right side pocket
Two angled back pockets with storm flaps and stay-down zippers
All pockets reinforced with Cordura lining
Elasticated waist with rubberised, metal-tipped drawcord
Articulated knees and crotch gusset for movement
Material is Oeko-Tex Standard 100 certified
Material is NFPA 2122 certified for fire resistance
Material weighs 363g/m2
Sweatpants weigh 670 grams
Machine wash 30°C
Constructed in Vietnam
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The 100 year Sweatpants. Lighter, softer, and even stronger

Our 100 Year Sweatpants have always been tough. But these sweatpants are the softest and lightest version we’ve ever made. They’re super stretchy, fleece-lined, breathable, and they come with five pockets to store all your valuables. But they’re also windproof, water repellent, fire resistant, abrasion resistant, snag resistant, and can withstand temperatures 4x hotter than the sun. So it’s fair to say they’re an upgrade.

They’re windproof, abrasion resistant, water repellent and fire resistant on the outside, and fleece lined on the inside.

The sweatpants combine 4 layers of different technology

Making sweatpants that can do this isn’t easy. In numbers, we’ve spent the last 3 years in R&D working on the 100 Year Sweatpants, and the material alone takes 20 weeks to make. And that’s because it combines 4 different layers of material technology.

Hard-wearing on the outside, soft on the inside

While the sweatpants are designed to cope with some of the most extreme threats the next century might send your way, on a practical level you’ll find the thick fleece lining makes it ultra-soft on the inside, while the high-strength polymer coating makes it incredibly hard-wearing on the outside.

The sweatpants can withstand temperatures of 19,400°C. That’s 4x hotter than the sun.

Most high strength, fireproof materials will do a good job of keeping you alive, but a bad job of making you comfortable. These sweatpants change that.

Ultra-soft and breathable with four-way stretch

Most high strength, fireproof materials will do a good of keeping you alive, but a bad job of making you comfortable. So the 100 Year Sweatpants change that. They’re soft and elastic. They’re highly breathable and high-wicking, so when you start working hard it lets warm air and sweat escape. And the pants are constructed with elastane so you can move in any direction without feeling resistance.

Five pockets, including 3 zipped pockets

The pants are equipped with 5 pockets – 3 of them zipped. You’ll find two open pockets at either side of the pants, and inside the right pocket there’s a second hidden pocket. It’s fitted with a water resistant zipper so you can securely store valuables inside it, and it’s big enough to fit a phone.

Elasticated and rope tied waist

The pants are built with an elasticated waistband for comfort. The waist tightens securely with a heavy-duty, metal tipped and rubberised rope that’s anchored down with a high-strength stitch at the back.

Coated with polartec hardface® for extreme durability

The outside of the entire sweatpants is embedded with a highly durable coating developed by Polartec called Hardface®. It’s a patented polymer surface treatment that increases the sweatpants’ lifespan by making them extremely resistant to abrasion and snagging. The high strength polymers are fused directly into the fibres, so the coating can’t be rubbed off or washed out. It feels completely smooth to the touch, and you only know it’s there by the subtle tessellating pattern that’s visible across the surface of the material.

A water repellent coating sheds rain and snow

The outer surface of the sweatpants is also coated with a water repellent treatment to help it shed light rain and snow. The type of coating we use is what’s known as a C0, meaning it’s completely free of any toxic fluorocarbons. This same technology helps the sweatpants to dry out quickly when they get wet.

The 100 year sweatpants are built from an ultra-tough, all-weather, fire resistant supermaterial.

Built with polartec technology

As well as being synonymous with outdoor gear, for the last decade Polartec have been developing flame resistant fabrics for the US military after their uniforms began melting in the intense heat of IED detonations. They work with military partners to develop combat-ready layering systems that protect soldiers from sudden heat sources in hostile territories. Our aim was to let anyone benefit from this technology.

Size + Fit

The 100 Year Sweatpants are designed with a regular fit.

Size XS S M L XL XXL
Fits waist 71 - 76 76 - 81 81 - 86 86 - 91 91 - 96 96 - 101
Outside leg 101 102.5 103 104.5 106 107.5
Size XS S M L XL XXL
Fits waist 28 - 30 30 - 32 32 - 34 34 - 36 36 - 38 38 - 40
Outside leg 40 40.5 40.5 41 41.5 42.5