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testing the best hiking rain pants in a subalpine forest
Rab Phantom ultralight Rain Pants

Ultralight Rain Pants Comparison Table

Rain Pants Price ($) Weight (oz) Fabric
Rab Phantom 150 3.0  Pertex 2.5L 
Zpacks Vertice 149 3.2 Vertice 3L
Salomon Bonatti 140 4.3 Proprietary 2.5L
Lightheart Gear  75 4.4 Sil-Nylon 1L
Montbell S DT UL 189 4.6 Super Dry-Tec 3L
OR Helium Rain 130 6.7 Pertex 2.5L
Montbell Gore-Tex 245 6.7 Gore-Tex 3L
REI Co-op Trailmade 70 7.7 Proprietary 2.5L
Marmot PreCip Eco 100 8.3 NanoPro 2.5L

Editor’s Choice Ultralight Rain Pants

Zpacks Vertice Rain Pants

Zpacks Vertice Rain Pants

Zpacks Vertice are our pick for best ultralight rain pants, and they earn this by offering the best overall blend of extremely low weight, 3L fabric, good waterproofness, and best-in-class breathability – a whopping 56k! The fit is generous, and their only feature is a drawcord cinch. Downsides to this pair are its modest durability (true of all 7d fabrics), and depending on how you look at it, old school C6 PFAS DWR treatment – highly effective but not eco-friendly.

  • Weight: 3.2 oz
  • Price: $149
  • Fabric: 3L Vertice, 7D nylon ripstop
  • Side Zippers: none
  • Pros: Ultralight. Ultra breathable.
  • Cons: Uses PFAS DWR. No ankle zip.

Next Best Ultralight Rain Pants

Montbell Super Dry-Tec U.L.

Montbell Super Dry-Tec Ultralight Rain Pants

The Montbell Super Dry Tec U.L. Rain Pants are our next favorite pair of ultralight rain pants, offering the second best overall blend of low weight, reasonable price, and 3L fabric. Features include ankle zips and an elasticized waistband. Apart from low durability which is the price of ultralight admission, the only real drawback is that they’re a smidge heavier, more expensive, and less breathable than the otherwise comparable Zpacks Vertice – though compared to Vertice, they do boast ankle zips.

  • Weight: 4.6 oz
  • Price: $189
  • Fabric: 3L SUPER DRY-TEC, 7d ripstop nylon face
  • Side Zippers: to knee
  • Pros: Ultralight! Half zip for easy on off. Transparent and extremely breathable WP/B stats (52k/20k)
  • Cons: Runs trim.

Best Ultralight Gore-Tex Rain Pants

Montbell Gore-Tex Rain Pants

Montbell Gore-Tex Rain Pants

Choose Montbell Gore-Tex rain pants for low weight, name brand three layer waterproofness, and knee-length zippers for easy on/off over shoes. Specifically, they’re the lightest Gore-Tex rain pants we know of. Downsides include the fact that they’re a bit expensive, and that lighter and more breathable options exist.

  • Weight: 6.7 oz
  • Price: $245
  • Fabric: 3L Gore-Tex, 20d ripstop nylon face, C-Knit backer
  • Side Zippers: Knee-length
  • Pros: Highly waterproof. Three layer. On/off without shoe removal.
  • Cons: Heavy end of ultralight. Expensive.

Most Waterproof Ultralight Rain Pants

Lightheart Gear Rain Pants

Lightheart Gear Rain Pants

If the forecast calls for heavy duty rain in a cooler environment, we recommend the Lightheart Gear Rain pants; 100% waterproof, 0% breathable, and very affordable. These are essentially made with sil-nylon or sil-poly tent fly fabric, rather than any kind of fancy Gore-Tex variant. As such, they absorb next to nothing and never wet out, at the cost of getting clammy quickly in warm temps or during active movement. Features include a drawstring waistband, ankle zips, ingenious pass through pockets, and a very generous fit. The main drawbacks is of course its lack of breathability.

  • Weight: 4.4 oz (men’s medium)
  • Price: $75
  • Fabric: 30D sil-nylon/poly
  • Side Zippers: 7″ ankle zips
  • Pros: 100% truly waterproof. Ultralight. Great price. Pass through pockets. Durable.
  • Cons: 0% breathable. Clammy.

Top Pick Ultralight Rain Pants

Rab Phantom Pants

Rab Phantom Waterproof Pants

Pick up the Rab Phantoms because they’re the lightest pair of super ultralight rain pants on the market, weighing just three ounces. Features include a drawcord waistband, adjustable hem clasp. Drawbacks are the mediocre durability, waterproofness, and breathability of 7d 2.5L Pertex Shield fabric, and an inadequate drawstring cinching holder that tends to come undone. Compared to three layer options, all 2.5L fabric feels plastic-y and unpleasant against skin.

  • Weight: 3.0 oz
  • Price: $150
  • Fabric: 2.5L Pertex Shield+, 7d ripstop nylon face
  • Side Zippers: none
  • Pros: Super ultralight! Transparent and respectable waterproofness & breathability stats (20k/20k).
  • Cons: Low durability. Not 3L! 2.5L means plastic-y feel against skin, shorter product lifespan. Drawstring cinch easily comes undone.


Salomon Bonatti Waterproof Pants

Another pair of ultralight rain pants to note are the Salomon Bonatti, designed in France for trail runners. These have a partially elasticized waistband-drawstring hybrid configuration, and ankle zips. The downside being that their 2.5L AdvancedSkin Dry fabric scores a middling 10k/10k WP/B tests. While notable for their sub-5-oz weight, numerous better options exist, but these could be a good pickup when on sale.

  • Weight: 4.3 oz
  • Price: $140
  • Fabric: AdvancedSkin Dry
  • Side Zippers: Ankle height.
  • Pros: Ultralight. Designed for running. Drawstring waistband.
  • Cons: Slim unisex fit, consider sizing up. Unexciting WP/B stats. Not 3L! 2.5L means plastic-y feel against skin, shorter product lifespan.


More Great Lightweight Rain Pants

Outdoor Research Helium Rain

Outdoor Research Helium Rain Pants

The Outdoor Research Helium bat above their weight class in terms of durability, thanks to the 30d Pertex Shield Diamond Fuse fabric. Features include ankle zips, a drawcord hem, and useful back pocket. Drawbacks are that they’re light-not-ultralight, and built with 2.5L fabric that feels plastic-y on the inside, and has middling WP/B stats. 

  • Weight: 6.7 oz
  • Price: $130
  • Fabric: Pertex Shield with DiamondFuse, 30D Nylon Ripstop
  • Side Zippers: Ankle
  • Pros: Lightweight. Durable. Great Value. Back pocket.
  • Cons: Light-not-ultralight. Not 3L! 2.5L means plastic-y feel against skin, shorter product lifespan.

Marmot PreCip Eco Rain Pants

Marmot PreCip Eco

Choose the Marmot Precip Eco for an affordable pair of fully-featured rain pants. They come with zipper hand pockets, a zipper back pocket, ankle zips, and an elasticized waistband with tieable cinch. Drawbacks include mediocre breathability, and the fact that they’re 2x the weight cutoff for ultralight rain pants. 

  • Weight: 8.3 oz
  • Price: $100
  • Fabric: NanoPro 100% recycled nylon
  • Side Zippers: Ankle
  • Pros: Lightweight. Hand Pockets. Recycled Fabric. Good value.
  • Cons: Mid-tier waterproof/breathability. Light-not-ultralight. Not 3L! 2.5L means plastic-y feel against skin, shorter product lifespan.

REI Co-op Trailmade Rain Pants

REI Co-op Trailmade

Go for the REI Co-op Trailmades because they are the most affordable lightweight rain pants for hiking at just $70, and come in a litany of plus, long, and short sizes to accommodate all bodies. Features include an elastic waist with drawcord cinch, ankle zips, and a rear zip pocket. Drawbacks should be obvious; at 9.5 ounces they’re barely lightweight, 2.5L feels plasti-y, and REI doesn’t even bother to give WP/B stats; so assume something along the lines of 10k/10k.

  • Weight: 7.7 oz
  • Price: $70
  • Fabric: 2.5L polyester with W/B membrane
  • Side Zippers: ankle
  • Pros: Affordable. Lightweight. Great size range.
  • Cons: Mid-tier waterproofness and breathability. Not 3L! 2.5L means plastic-y feel against skin, shorter product lifespan.

Pro Tips and Buyer Info

10 oz or less rule for hiking rain pants

When shopping for a pair of rain pants for hiking, you should begin with the 10 oz rule. Anything above that is too heavy duty, and will do more harm than good weighing down your backpack.

Consider how infrequently hikers and backpackers actually use rain pants over the course of a season. Most hikes don’t involve rain, and even when they do, a rain jacket is usually sufficient.

Thus, aside from keeping the wearer dry, the next most important thing for rain pants is that they don’t weigh down your backpack. However, there are exceptions. For example, if you will be bushwhacking in the rain.

Considerations on different zipper configurations

Rain pants for hiking have an array of zippers, ranging from none at all, to ¼, ¾, and full length zippers. It is our perspective that zippers are a nice to have, but not a need to have. They provide benefit in how they add ventilation and if large enough, can allow you take your hiking rain pants on or off without first removing your shoes.

That said, zippers are a feature that manufacturers have to build into the garment, which will add cost and weight. This is not always a good exchange.

If you have small-to-medium size feet, ¼ zips can be very helpful allowing you to take the pants on/off without removing your shoes. However, they don’t help or do anything if you have large feet, and in that case, we would rather have no ankle zipper. In that scenario, we prefer ¾ or full zips pants that run high enough to allow for leg ventilation and the ability to interface nicely with large shoes.

Tips for wearing waterproof pants

When wearing your waterproof pants on a hike, there are a few things that can help you optimize their performance. For starters, if you’re wearing the rain pants over top of hiking pants, we recommend tucking your pants into your socks so there is no chance that the bottom of the hiking pants will stick out below the bottom hems of your rain pants.

If your hiking rain pants have an elastic shock cord or ability to cinch, we recommend taking advantage to prevent the pants from sagging, which can create a gap where the top of your pants meet the bottom of your jacket and backpack. Lastly, if your rain pants have zippers, we prefer to leave them open along the quad for ventilation, unless it’s outright pouring.

Testing the best lightweight rain jacket in Patagonia during a storm on a bridge over a river

How to care for hiking rain pants

Like with rain jackets, a little care goes a long way for rain pants. We recommend keeping a patch kit with gear aid tenacious tape stored in your backpack for field repairs. They are very effective and long lasting.

Once per year, or periodically if used and dirtied frequently, we also recommend using NikWax Techwash and TX.Direct to clean your hiking rain pants and restore the DWR finish. This will help revive its ability to have water bead up and roll off upon contact. The best rain pants for hiking all require a bit of periodic upkeep, and that’s completely normal.

A complete guide to the best rain jackets

Don’t miss our buyers guide for the best rain jackets of the year! Make sure you’re fully waterproof.

testing lightweight rain jackets in stormy patagonia

Ultralight rain pants conclusion

Getting soaked in the backcountry is uncomfortable and dangerous, which is why you should nearly always carry ultralight rain pants. They take up very little room in your pack, give peace of mind, double as wind breakers and mosquito blockers, and cost way less than jackets. Coming from a Pacific Northwesterner, don’t overlook rain pants!