Rain pants spend a lot of time packed away. When you need them, the small details suddenly matter. Can you pull them over your boots? Does the waist sit neatly under a hipbelt? Can you lift a knee without dragging the fabric tight?
My first choice is a sturdy shell with useful side zips. For a lighter pack, I would give up some features before giving up a sound fit. These five waterproof hiking pants span that range, from simple emergency cover to fuller rain shells for long wet days.
The best waterproof hiking pants at a glance
These are rain shells worn over a base layer, shorts, or hiking pants. They are not a list of ordinary stretch pants with a water-resistant finish. That difference matters when rain keeps falling.
| Rain pants | Why I would choose them |
|---|---|
| Patagonia Torrentshell 3L | A three-layer shell with cuff-to-thigh vents |
| REI Co-op Rainier | Full side zips for changes over boots |
| Outdoor Research Helium UL | Low weight with ankle zips and a stow pocket |
| Zpacks Vertice | A stripped-back choice for a very light kit |
| Marmot PreCip Eco Full-Zip | An older full-zip option; discontinued at REI |
1. Patagonia Torrentshell 3L Rain Pants
My all-round choice
The Patagonia Torrentshell 3L is where I would start for regular wet-weather use. Its three-layer H2No shell has a 50-denier nylon face and a tricot backing. The listed weight is 11.8 ounces.
Why it earns the top spot
The two-way side zips run from cuff to thigh. They help with getting the pants over boots and let you vent the legs. The current regular inseam is 32½ inches; a 30-inch version is also listed.
The compromise
This is a more substantial pair of rain pants than either ultralight choice below. It is also worth checking pocket access. On Patagonia's page, reviewer Tucson J. disliked not being able to reach the pockets of the pants underneath. That is a useful fit-room check, not a reason to cut the pocket lining.
Who should choose it?
Choose the Torrentshell when a three-layer build and useful vents matter more than the smallest packed size. For a shell carried mostly as backup, the Helium UL deserves a look.
2. REI Co-op Rainier Rain Pants
For easy changes over boots
The REI Co-op Rainier has full-length outseam zips. That is its clearest reason to be on this list. If taking boots off to add a layer sounds awkward, start here.
What the shell offers
REI lists a 2.5-layer HydroWall waterproof and breathable membrane and a 12-ounce weight. The long side zips also let you adjust ventilation. They give you more access than short ankle zips.
What you carry in return
Full-length zippers add parts, bulk, and weight. They are worthwhile if you use them. For a fair-weather trip where the pants may never leave the pack, a simpler shell can make more sense.
My verdict
The Rainier is a practical choice for hikers who value quick changes and flexible venting. Try the zips while wearing your own boots. Check that the waist stays put with the sides partly open and that nothing catches on a boot hook.
3. Outdoor Research Helium UL Pant
My lighter choice with ankle zips
The current Outdoor Research Helium UL Pant uses a 15-denier nylon shell and Toray Dermizax 2.75-layer fabric. It weighs a listed 5.75 ounces. This version differs from older Outdoor Research Helium rain pants, so match the name and model before comparing specs.
Useful features stay
You still get taped seams, ankle zippers, a drawcord waist, and a back pocket that serves as a stuff sack. The cuffs have gripper tape and lace loops.
The tradeoff
Ankle zips do not open the legs as far as full-length zips. Check the opening over your boots rather than assume it will fit. I would also treat this thin shell carefully around sharp rock and dense brush.
My verdict
The Helium UL is my pick for hikers who want ultralight rain pants but still value ankle zips. For regular use in rough terrain, the heavier Torrentshell is the first pair I would compare it with.
4. Zpacks Vertice Rain Pants
For a minimal pack
The Zpacks Vertice Rain Pants suit a very light kit. The current men's page lists a headline weight of 2.5 ounces and a simple shock-cord waist. Check the size chart rather than apply that weight to every size.
Simple packing
Zpacks says to roll the pants and secure them with the waist elastic. There is no need for a separate stuff sack. The fit is intended to go over hiking pants, and the chart measures hips over clothing.
Mind the leg opening
The listed leg opening is 15⅜ inches around. That is a measurement to compare with your footwear before buying. A very light pair that forces an awkward change may not suit your route or balance.
My verdict
Choose these ultralight rain pants when low packed weight is the main aim and the simple cut works for you. I would not make them my first choice for repeated contact with rough rock or thorny plants.
5. Marmot PreCip Eco Full-Zip Pants
An older option to compare with care
The Marmot PreCip Eco Full-Zip Pants use NanoPro waterproof and breathable fabric, taped seams, and full side zips. REI lists this model as discontinued, with sizes sold out. Treat it as an older alternative you may find elsewhere, not a dependable choice for a trip next week.
Useful access
Storm flaps cover the long zips. The pants also have an elastic waist and zipped hand pockets. These are fuller-featured rain pants rather than a bare minimum shell.
Check the exact version
A clearance price is only useful if the size and cut are right. Check stock, the exact model, and the return terms before paying. Do not assume that a size shown on a product page is still available to ship.
My verdict
I would choose the REI Rainier first if I needed full side zips and a pair I could order now. The PreCip remains worth comparing if you find your size in sound condition at a good price. Fit should still decide the purchase.
Waterproof or water resistant?
A pair of hiking pants can shed a few drops and still soak through in sustained rain. The words on the label describe different jobs.
A surface finish is not the whole shell
Durable water repellent, or DWR, helps water bead on the outside. A waterproof membrane or coating forms the rain barrier beneath. REI's rainwear guide explains why those layers work together.
What ordinary hiking pants do well
Water-resistant pants can be pleasant for a dry walk with brief splashes or damp grass. They often feel less closed-in than a rain shell. Their water resistance is useful, but it is not a promise of protection in heavy rain.
What waterproof hiking pants add
A rain shell is built to keep liquid water out through its fabric and sealed seams. Openings at the waist and cuffs still matter. Rain can enter a good shell if the jacket ends above the waist or water runs down inside a boot.
Do you need Gore-Tex?
No. Gore-Tex is one family of waterproof fabrics, not the name for every working rain shell. The pants here use several other constructions. I would compare the whole garment, its fit, and its features before paying for a fabric name alone.
Two-and-a-half or three layers?
Layer counts describe how a shell is built. They do not tell you how many pairs of pants to wear.
Three-layer shells
A three-layer shell joins an outer fabric, a waterproof layer, and an inner backing. That backing covers the inside. The Torrentshell uses this layout. It is the more substantial choice here for regular use.
Lighter constructions
A 2.5-layer shell uses a lighter inner treatment instead of a separate full fabric backing. The Rainier uses that type of build. The Helium UL has its own 2.75-layer construction. Labels alone are not a comfort test; try the inside against the layer you will wear.
Weight is only one clue
A low weight may come from fewer pockets, shorter zips, thinner cloth, or all three. Ask what was removed. A feature you never use is easy to give up. One you need in cold rain is much harder to replace on the trail.
Choose side zips for your footwear
I put zipper length near the top of a rain-pants checklist. It changes how you add the layer and how you let heat out.
Ankle zips
Ankle zips widen the lower legs. They keep the upper shell simple and can be enough for low shoes. Big boots may still be a squeeze. Try a clean boot through the opening at home, with the zip fully open.
Cuff-to-thigh zips
Longer side zips create more room and can double as vents. Two-way sliders may let you open a section without opening the whole leg. Practice with them before the weather turns, especially if the sliders are small.
Full-length zippers
Full-length zippers give the most access. They can also feel busy at the waist. Check the top closure with your pack on. A buckle, zip, and hipbelt stacked in one place can be annoying even when each piece fits on its own.
Storm flaps and snagging
Pull the fabric clear before moving a zip. If a flap catches, stop rather than force it. Mud and grit are another reason to keep the lower legs tidy. A working zip is more useful than a few seconds saved by yanking it shut.
Fit rain pants over the layers you use
Do not choose waterproof hiking pants by your jeans size alone. The shell needs room for the clothes beneath it and for a full stride.
Use the maker's measurements
Some charts use body measurements. Others ask you to measure over clothes. Follow the chart for that exact model. Guessing one size larger can leave you with excess cloth without solving a tight seat or short rise.
Try a high step
Step onto a low stair and bend both knees. Sit down, then stand. The waist should stay in place without pulling the crotch tight. Articulated knees can help a cut move, but they do not fix the wrong size.
Check the hem
The cuffs should cover the tops of your footwear without dragging beneath your heels. Too much length can catch on the ground or wear through. Too little may leave a gap when you step uphill. Short sizing can be more useful than another pocket.
Try the pack belt
Wear your loaded pack during the fit check. The rain-pants waist should lie smoothly under the hipbelt. Keep bulky knots, pockets, and zip pulls away from pressure points. Our hiking backpack comparison covers how to fit the pack around the load you carry.
Think about pocket access
Put a small item in your normal trouser pocket, then add the shell. Can you reach it without opening the waist? If not, move items you need often to a jacket or pack pocket before the rain starts.
Breathable does not mean sweat-free
A waterproof shell is still an extra layer. On a warm climb, the inside can feel damp even when rain has not leaked through. That does not make every clammy patch a failed membrane.
Use vents when conditions allow
Open side zips only as far as the rain and wind permit. Watch which side faces the weather. A wide-open vent can let water in. Close it before you change direction if that puts the opening into the rain.
Adjust the layers beneath
Thin shorts under rain pants may feel better than thick hiking pants on a mild day. Cold weather needs a different plan. Try the combination before a long hike rather than assume the shell will make up for every layer below it.
Keep the pace reasonable
Slowing down can be more useful than hunting for another fabric label. If you are already too warm, adding a closed shell will not make that easier. Take a safe pause, adjust the layers, and continue at a pace suited to the conditions.
Warm rain changes the choice
For a short, mild walk with a quick return, some hikers accept wet legs. For cold rain or a remote route, that tradeoff can be quite different. The best rain pants are the ones that suit the likely exposure and the consequences of getting wet.
When ultralight rain pants make sense
Ultralight rain pants appeal because they remove weight from something you may barely wear. That is a fair reason to choose them. It is not the only one.
For occasional cover
A light shell is easy to justify in a pack when showers are possible. The Helium UL keeps ankle zips; the Vertice takes a simpler approach. Choose between them by access and fit, not just the number on the scale.
For extended wear
If the forecast suggests rain through much of the day, think about repeated use. You will sit, bend, adjust zips, and pass close to the ground. A heavier shell may be a better match even when it takes more space.
For rough ground
Keep thin rain pants clear of thorny branches and sharp edges. Do not sit straight onto jagged rock. This is a practical limit of a very light shell, not a claim that a heavier pair cannot tear.
For a first purchase
I would buy for the trips you actually take. If those are mixed day hikes with occasional wet weather, useful zips and a good fit may matter more than the lightest possible fabric. A good pair can also serve for rainy dog walks without needing a separate set of outdoor clothing.
Make the rest of the rain kit work
Weather protection is a chain of overlapping layers. The gaps between them deserve as much attention as the fabric.
Rain jacket overlap
Reach overhead with the jacket and pants on. The jacket hem should still overlap the waist. Bend forward too. A jacket that rides up beneath the pack can expose the waistband even when it looks long enough while standing still.
Socks and cuffs
Keep the rain-pants cuffs outside the tops of your boots so runoff does not lead straight inside. Avoid a fold that funnels water toward the opening. Our guide to hiking socks helps match sock height and thickness to the footwear beneath.
A hood and brim
A cap or a hiking hat with a suitable brim can help hold a hood away from your eyes. Try that setup before buying another piece of rain gear. The hood still needs to turn with your head.
Rain skirts
A rain skirt can be quick to add and leave more space for air around the legs. It does not cover the lower legs like full pants. Wind, steep steps, and the rest of your clothing all affect whether that open design makes sense.
A shell does not make a storm safe
Arizona can call for rain protection without calling for a hike through a storm. Waterproof pants address wet clothing. They do not protect you from lightning or floodwater.
The National Weather Service's lightning guidance says to seek a substantial building or enclosed metal-topped vehicle when thunder is heard. There is no safe place outside in a thunderstorm. Plan the route and timing around that limit.
Keep the forecast easy to check before you leave. Choose a turnaround point while the choice is still simple. A pair of rain pants should support a sound plan, not become a reason to stretch it.
Care for the shell you bought
Start with the garment label. Care rules differ, and a method meant for one waterproof fabric may be wrong for another.
Clean without guesswork
Use the wash method and cleaner the maker permits. Avoid fabric softeners when the instructions rule them out. More detergent is not a better clean; rinse as directed so residue does not become a new problem.
Check the water-repellent finish
If water stops beading on the face fabric, check the maker's cleaning and DWR-care steps. Do not assume the whole shell has failed. Surface wetting and a hole through the waterproof layer are different problems.
Dry as directed
Some shells permit low tumble drying; others give different heat limits. Do not use high heat to hurry the process. Let the pants dry fully before long storage, with pockets and folds opened out.
Repair small damage early
Inspect the seat, knees, cuffs, and seam tape. Ask the maker which repair materials suit the fabric. Zpacks, for example, says repair tape adheres to the inside of its Vertice material, not the outside. A small, well-placed repair is better than tape that peels off at the first bend.
Questions before you buy
Are waterproof hiking pants worth it?
They can be, especially for cold rain, long wet days, or routes far from shelter. Their value is lower if your walks are short, warm, and easy to cut short. Match the choice to the trip, then carry the layer where you can reach it.
Can I wear rain pants all day?
Yes, if the fit and weather make that sensible. Try them over your intended layers first. Pay attention to heat, waist pressure, and rubbing. All-day wear makes small fit problems more noticeable.
Will waterproof pants keep my shoes dry?
Not by themselves. Water can enter footwear from above, through its fabric, or during a deep step into water. Cuff overlap helps with runoff, but rain pants are not a sealed boot cover.
Which are the best ultralight rain pants here?
I favor the Outdoor Research Helium UL when ankle zips matter. The Zpacks Vertice is the leaner choice for someone happy with a simpler design. Both deserve a careful footwear fit check before a trip.
What would I buy first?
The Torrentshell 3L is my all-round starting point. If full-length zips are the feature you will use most, try the Rainier too. Choose the pair you can move in, put on, and vent with ease. Those are the details that count when the pants finally come out of the pack.