Description
Tech Info
Size chart
2026 Burton AK Helium Insulated Pant
Layer up for a cold day on the mountain. Stay warm at base camp. The men's Burton [ak] Helium Stretch Insulated Pants are that extra layer that makes a difference on the coldest days. Stretchy and breathable, they're made for wearing under your shell pants or bibs, but they're so comfortable you'll probably wear them for a lot more things, too.
Summary
| Fit | Regular |
| Length | Inseam 32.5" Inches |
| Material | Stretch Breathable Lightweight 20D Nylon/Spandex Plain Weave + DWR |
| Waterproof Rating | DWR Coated |
| Breathability | High-CFM Stretch Fabric |
| Insulation | 40g Thermacore Stretch |
| Warranty | Lifetime Warranty |
Fit
- Regular Fit – Contoured and ergonomic with room to move and layer underneath shell pants; inseam is 32.5".
Material
- Stretch Breathable Lightweight 20D Nylon/Spandex Plain Weave – Lightweight and flexible with a water-repellent finish for layering comfort.
- Lining – Stretch 20D Nylon/Spandex Ripstop for added breathability and next-to-skin comfort.
Insulation
- 40g Thermacore Stretch – Lightweight synthetic insulation that flexes with your movement while maintaining breathable warmth.
Waterproofing
- DWR Coated – Durable Water Repellent coating for light moisture protection in layering applications.
Breathability
- High-CFM Stretch Fabric – Designed for high-output activity and thermal regulation without overheating.
Pockets
- Zippered Handwarmer Pockets – Secure storage with microfleece lining.
- Zippered Back Pocket – Low-profile, functional storage for backup items.
Additional Features
- Stretch Fabrication – Moves effortlessly during hiking, skinning, or lounging.
- Stretch Binding at Cuffs – Seals out cold without restricting mobility or layering.
- Elasticized Waistband with Internal Drawcord – Comfort-focused waist adjustment for a secure, dialed fit.
- Reflective Details – Enhances visibility during early starts or late descents.
- YKK® Zippers – Smooth and reliable performance on every pocket.
- bluesign® Approved Materials – Environmentally responsible from fiber to finish.
Size Chart
| Size | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|
| S | 31–33 | 37–38.5 | 32.5 |
| M | 33–35 | 38.5–40.5 | 32.5 |
| L | 35–37 | 40.5–42.5 | 32.5 |
| XL | 37–40 | 42.5–45.5 | 32.5 |
| XXL | 40–44 | 45.5–49.5 | 32.5 |
Fit Styles
- Slim Fit – Cut close to the body for a modern, streamlined look with room for base layers and light mid layers.
- Regular Fit – Traditional fit that’s balanced and comfortable with enough space for layering and full mobility.
- Relaxed Fit – Roomier cut with a casual feel and extra space for layering and movement.
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