Beta vs Helium
top ten:best rain pants
Choosing the right rain pants comes down to a fundamental trade-off: all-day storm armor versus ultralight emergency insurance. The Arc’teryx Beta Pants and Outdoor Research Helium Rain Pants occupy opposite ends of this foul-weather spectrum. Built for demanding alpine conditions, the Arc’teryx Beta utilizes a rugged, three-layer Gore-Tex construction designed for prolonged wear during relentless downpours, bushwhacking, and mixed-weather ascents. Conversely, the Outdoor Research Helium is the quintessential ounce-counter’s dream, prioritizing minimal pack space and featherweight packability above all else. For backpackers, thru-hikers, and mountaineers, the buying decision hinges on how you intend to use them. Will these pants live at the bottom of your pack for 90% of your trek as an 'in-case-of-emergency' shell, or do you plan to hike for days on end through sodden brush, sleet, and driving rain? Understanding your threshold for weight versus stormproof durability, breathability, and trailside convenience will determine which pair deserves a spot in your pack.
Spec-by-Spec
| Spec | Beta | Helium |
|---|---|---|
| Weight | 330 g (11.6 oz) | 180 g (6.3 oz) |
| Capacity/Size | Men's XS–XXL (Short, Regular, Tall inseams) | Men's S–XXL (Standard inseam) |
| Materials | 3L 70D GORE-TEX with GORE C-KNIT backer technology | 2.5L Pertex Shield Diamond Fuse 30D nylon ripstop |
| Price tier | Premium ($325–$350) | Budget / Mid-range ($130–$160) |
| Warranty | Arc'teryx Limited Lifetime Warranty | Outdoor Research Infinite Guarantee |
| Best use | Alpine trekking, mountaineering, extended severe-weather hiking | Fast-and-light backpacking, trail running, emergency rain shell |
| Portability | Moderate pack volume (roughly size of a 1L Nalgene bottle) | Exceptional packability (stuffs into its own pocket to fist size) |
| Durability | Exceptional; 70D face fabric resists abrasion, rock, and crampons | Moderate; 30D Diamond Fuse handles light brushing, vulnerable to sharp rock |
| Feature highlights | Full-length separating side zippers, laminated fly, articulated patterning | Ankle-high zippers, integrated stuff sack pocket, elastic waistband |
Beta
Best for: All-season alpine backpackers and mountaineers who require heavy-duty, all-day storm protection and easy boot-on transitions.
Pros
- Bombproof 3-layer GORE-TEX with comfortable, quiet C-KNIT backer
- Full-length separating side zips allow venting and easy on/off over boots and crampons
- Heavy-duty 70D face fabric resists rips, scuffs, and heavy abrasion
- Tailored ergonomic articulation provides superb mobility without excess bulk
Cons
- Substantially more expensive than basic waterproof pants
- Nearly double the weight and pack volume of ultralight alternatives
Helium
Best for: Ultralight hikers and fastpackers needing an affordable, barely-there emergency shell for unpredictable weather.
Pros
- Extremely lightweight at just 6.3 ounces, disappearing into any pack
- Packs down tiny into its own integrated back pocket
- Significantly more accessible price point than technical alpine shells
- Diamond Fuse technology provides impressive tear resistance for a 2.5-layer pant
Cons
- Only features ankle zippers, making it difficult to pull on over bulky hiking boots
- 2.5-layer interior can feel clammy and sticky against bare skin during heavy exertion
- Lacks pocket storage and robust venting options for warmer downpours
The Verdict
The Arc’teryx Beta Pant takes the overall victory as a true stormpiece, providing unmatched weather protection, next-to-skin comfort, and practical full-length zips. If your trips routinely involve multi-day downpours, scree fields, or alpine mountaineering, the Beta’s 3-layer GORE-TEX build is worth every penny and ounce. It operates as active outerwear you can comfortably wear for eight straight hours of hiking without overheating or feeling clammy. However, the Outdoor Research Helium remains the undisputed champion for ultralight backpackers, summer thru-hikers, and gram-counters who view rain pants primarily as emergency gear. It costs less than half the price and occupies negligible pack space. Buy the Arc’teryx Beta if you hike through severe, sustained storms where failure is not an option; choose the Outdoor Research Helium if your rain gear spends most of its life inside your pack waiting out passing summer squalls.
See where both rank in the full list: the complete Top 10 →