Outdoor Research Helium II Fully Reviewed

9.2 score
[Editors rating (9.2)] = Runnerclick score (9.2)/10

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Editor rating: 9.2 / 10
User's rating: based on 0 user ratings
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Outdoor Research Helium II Fully Reviewed Review Facts

One of the most refreshing ways to run is to do so outdoors. However, the consequence of outdoor running is exposure to the elements. A bit of road running can be pleasant during a sunny day but the mood can quickly turn sour if rain begins to fall.  In order to mitigate the potential damage and discomfort that comes with running in the rain, many popular running shoes are designed with waterproof materials. Also, waterproof running jackets such as Outdoor Research Helium II which provide excellent protection from wind chill and rain while storing easily and weighing very light.

Editor's Pros & Cons
  • Excellent water protection
  • Reflective materials for safety
  • Fantastic heat retention
  • Portable and lightweight
  • Comfortable and adjustable hood
  • Inconvenient pocket placement
  • Unreasonable price
  • Ineffective at layering


As a jacket, the primary use for this product is to wear during weather conditions where outdoor running may be uncomfortable. The Helium II is most effective in colder weather conditions, including the presence of chilly winds or a rainstorm. Despite offering heat insulation and weather protection, this Outdoor Research jacket is not viable for use in snowy weather unless used as one of several layers.

A very thin layer of ripstop nylon makes up the majority of this wind jacket, offering a surprising level of durability and wind protection despite its incredibly modest design. A few pockets have been implemented to the jacket as well, with one being located on the front as a Velcro breast pocket and the other being located near the collapsible hood as a storage pouch.

Neither of these pockets is particularly useful as far as jacket pockets go; having some form of storage near the bottom in a position that is more easily accessible to the hands would have been preferable. Still, these pockets can be used to store valuables such as a smartphone, mp3 player, keys, or various survival tools.

Finally, the entire Helium II is collapsible and can be stored in a very small pouch. This is the most convenient feature of this product since it can be easily stowed conveniently in tinier areas, such as the glove box of a car or in the corner of a suitcase.


Since this jacket is made of nylon, the Helium II doesn’t offer a high level of breathability. This isn’t necessarily a bad thing since it was designed for the purpose of trapping warm air rather than providing fresh and cool air to circulate.
However, it does mean that wearing this jacket in warmer conditions is a bad idea unless the wearer was trying to encourage weight loss through sweating; in this situation, a full-body sauna suit would be more appropriate and inexpensive.

Customers who may be concerned about overheating while wearing this Outdoor Research product can take solace in the fact that it is so lightweight. The fact that it only weighs around 5 ½ ounces means that it manages to avoid the negative sensations otherwise associated with an article of clothing that lacks breathability. Simply put, this jacket wasn’t designed for providing airflow and doesn’t suffer from its exclusion.


The comfortable aspects of the Helium II are its lighter weight and insulating properties. This makes this wind jacket most comfortable for a particular type of runner: one who lives in an area with frequent windy weather that doesn’t want to carry around a jacket that would weigh them down. This is also an excellent comfort option for runners in rainy environments such as the Pacific Northwest since this jacket was also designed as a rain shell.

Customers who have purchased this Mountain Research windbreaker and left reviews online have stated that this is a comfortable option for runners, hikers, and casual walkers in environments with temperatures around 30 to 50 degrees Fahrenheit.

One aspect of the Helium II’s design that a few people found uncomfortable is the lack of substantial storage in either of its pockets. As previously mentioned, the lack of substantial lower pockets within easy reach of the hands makes the other pockets and pouches provided feel like an afterthought.

Another uncomfortable design aspect is the tighter fit; this isn’t an issue when wearing this jacket on its own but anyone in snowy conditions trying to use this windbreaker for layering will have difficulties.


With options for both men and women, the Helium II offers sizing that is catered to the particular needs of each gender. This may not seem like a big deal but many similar windbreakers and rain shells only offer unisex sizing. Because of this, many common sizing pitfalls can be avoided and the majority of customers will be able to purchase the size that is perfect for them.

Another positive aspect of this jacket’s sizing is the manner in which it can be stored. Aside from its protection from the elements, the most impressive feature of the Outdoor Research Helium II is how it can be condensed into a much more portable size. This isn’t a feature that is exclusive to this product since many other windbreakers offer this ability.

However, it’s still incredibly convenient for individuals who don’t have a lot of storage space since they can shrink this product down to roughly the size of a wallet. This may go without saying but this isn’t possible while storing objects inside one of the two pockets.


Despite being made with a single thin layer of fabric, the Outdoor Research Helium II Jacket is surprisingly durable. Considering that it was intended to function as suitable lightweight wind protection for runners, it should make sense that it would be built to last. What many people may not realize is that nylon is a very strong form of fabric; after all, it’s frequently used to make parachutes.

Customers have remarked that the Helium II does an admirable job handling abrasions from falling or coming into contact with foliage during a trail run. However, one aspect of this rain shell’s design that left one customer unsatisfied was the Velcro used to fasten the front chest pocket.

After a while, this customer remarked that they had a difficult time getting this pouch to remain closed. This is unfortunate but the good news is that Velcro is very easily and cheaply replaceable, so any runners who experience this issue but still love the Helium II should have no problem mitigating the damage.


Since the Outdoor Research Helium II is simply a thin jacket designed for the purposes of providing lightweight portability, it can be understood that it comes with no accessories. The closest thing to an accessory that comes with this jacket is a small pouch that it fits inside when compressed into its portable travel size.

While no accessories are included in the package, this windbreaker offers a decent level of compatibility with accessories in general. For example, the zippered chest pocket and collapsible hood pouch are good for storing valuables and tools. In particular, the chest pocket is at the ideal spot for a music player of some kind; leaving the zipper partially unzipped could help to feed the earbuds to the wearer’s ears. In addition, a small loop near the bottom of the Helium II is compatible with carabiner clips.

Aside from keys, this makes it easy to clip many other objects to this jacket such as a survival knife, firestarter, or other camping tools that can be clipped.

Finally, the waterproof nature of this jacket’s construction means that it can double as a rain trap or water storage bag in a true survival situation. Although this is not very likely to be an issue for the majority of trail runners and hikers, the knowledge that this Outdoor Research product can be used in this way should bring some comfort.



This rain shell comes in a variety of color choices, with different options for men’s and women’s sizes. Color choices vary from more muted tones, such as green and dark blue, to brighter and warmer palettes, such as orange and yellow. The most significant aspect of this product’s visual design is the fact that regardless of what color it comes in, the presence of reflective material on key areas helps to improve the wearer’s visibility in environments with less light. This is an extremely important safety feature for individuals who run close to traffic.

The style in which this jacket fits on the wearer’s body is tight in order to prevent rain or other moisture from leaking under the Helium II and coming into contact with the wearer’s torso. While this is a positive feature and a major selling point for this Outdoor Research product, the tightness of this windbreaker makes it difficult to use in for layering. Because of this, individuals in very cold and snowy environments may not want to use this jacket for that purpose, finding a thermal sweater or something from Under Armour to be more effective.


The best way to describe the price of the Outdoor Research Helium II jacket is to say that it is volatile. The initial retail price is very high, which may confuse some potential customers due to its thin construction and presumably inexpensive build materials. It is perhaps because of this confusion that may different retailers sell this product at varying discounts.

Some discounted rates observed for listings of this jacket on retail sites such as Amazon show discounts of roughly 30 to 40 percent. Others show a price cut of almost 50 percent off the initial price. Unfortunately, despite these increasingly drastic discounts, the Helium II is overpriced.

When compared to other windbreakers and rain shells that feature a similar design, this product costs more even with a sharp price decrease. It’s true that Outdoor Research did an excellent job designing this jacket to perform all of its intended functions but the fact remains that the cost is unjustifiable. It is most likely a better idea for runners on a budget to invest in a cheaper windbreaker or thermal sweater, depending on their specific needs.
Key Features

Key Features

  • Ripstop nylon material

  • Reinforced zippers on front

  • Variety of color options with reflective elements

  • One zippered breast pocket for storing valuables

  • Collapsible hood with additional storage pouch

  • Can be compressed into a highly portable size

Bottom Line

Bottom Line

There’s a lot of things that the Outdoor Research Helium II has going for it. The material used when making it is a miracle of lightweight durability; the fact that the entire jacket can be compressed into the size of two protein bars is even more miraculous. This windbreaker also has a surprising amount of versatility that makes it useful in a desperate survival situation, making it a great fit for trail runners, hikers, campers, and anyone else who enjoys the untamed wild.

However, there are some features of the Helium II that are problematic.

One of these is the inconvenient and frankly annoying placement of its pockets. Neither of the two pockets included in this product is placed in a convenient location and essentially feel like they were added as an afterthought.

Another minor concern is the fact that this jacket fits too tightly to the body for it to be viable as one of the multiple layers. In a product that is so versatile already, it’s strange to see this conspicuous absence in its design.

Finally, the most concerning negative about this Outdoor Research product is that the price is way too high. There is simply no justifying the Outdoor Research Helium II being sold at the price it currently boasts. However, none of these issues get in the way of this windbreaker’s incredible positives, so it is still wholeheartedly recommended for runners who worry about wind and rain.