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The Outdoor Research Helium Down Jacket is the alpine insulator that does it all—ultralight, packable, and built with Pertex® Quantum Diamond Fuse recycled nylon plus Pertex® Shield reinforced shoulders for waterproof protection where you need it most. Responsibly sourced 800+ fill power down delivers serious warmth, while the left-hand pocket doubles as a stuff sack for easy packing, and elastic drawcord hem with Low-Pro Binding™ keeps the silhouette clean.
Shell – bluesign® approved Pertex® Quantum with Diamond Fuse Technology 100% Recycled Nylon 20D
Hood, Shoulder, and Upper – Pertex® Shield with Diamond Fuse Technology 2.5L 100% Nylon 30D Ripstop
800-fill RDS Goose Down
100% Nylon 20D Ripstop Lining
Left Hand Pocket Doubles as Stuff Sack
External Chest Pockets
Brushed Tricot Hand Pockets
Dual Internal Stash Pockets
Single Separating Center Front Zipper
Clean Finish Elastic Drawcord Hem
Low-Pro Binding
| Warmth | Description | Ideal Conditions |
| Shell | Outer shell with no insulation. Pair with base layers and mid layers to fine tune the level of warmth required. | Variable |
| Warm | Light insulation. Use additional base or mid layers to add warmth when temperatures drop. | 20° - 35° |
| Warmer | Moderate insulation. Suitable for cold conditions. | 10° - 25° |
| Warmest | Heavy insulation. Designed to keep you comfortable and protected on the coldest days. | Below 15° |
| Size | S | M | L | XL | XXL | XXXL |
| Weight (g) | 385 |