Quick-dry is not waterproof
Many hiking pants advertise a durable water repellent finish, usually shortened to DWR, on fabric that is not waterproof. Moosehill's HikerFlex M015 page, read 29 October 2026, describes its 90% polyester, 10% spandex pants as water-repellent and quick-dry for morning dew or sudden rain. [3] That means light moisture beads and the fabric dries fast, not that you stay dry in steady rain.
Arc'teryx describes DWR as a polymer coating on the face fabric that makes water bead and roll off. When it stops working, the face fabric soaks through, which it calls wetting out, and breathability drops. [2] This guide is based on published manufacturer care pages, not our own wash tests.
Why water stops beading
Usually the finish is dirty, not gone. Arc'teryx lists sweat and body oils, dirt, smoke, sunscreen and bug spray as contaminants that cause wetting out, and says wear shows up most on the back, shoulders and cuffs; on pants, think knees and seat. [2] It also notes that newer PFAS-free finishes may need more frequent washing and tumble drying to keep performing. [2]
What two manufacturers say
Both pages were written for waterproof outerwear rather than hiking pants, but they explain how DWR finishes behave. Where they differ, follow your garment's label.
| Step | GORE-TEX outerwear page [1] | Arc'teryx DWR page [2] |
|---|---|---|
| Before washing | Not specified | Close all zippers |
| Wash | 40C / 105F with a small amount of liquid detergent, about 30 ml per load | Clean the garment first; contamination is the usual cause |
| Avoid | Powder detergent, fabric softener, stain remover, bleach | Not listed on this page |
| Rinse | Rinse twice, minimize spinning | Not specified |
| Dry | Line dry or warm gentle tumble; do not dry at high temperature | Dry completely; air drying takes 12 to 24 hours |
| Reactivate | Tumble a further 20 minutes once dry, or iron gently under a towel without steam | Tumble 20 minutes on gentle heat |
| Re-treat when | Repellency cannot be reactivated by washing and drying | Still not beading after washing and tumble drying |
A routine for water-repellent hiking pants
- Read the sewn-in label first; stretch fabrics may limit heat.
- Empty pockets and close every zip, including zip-off leg zips. [2]
- Wash with a small amount of liquid detergent, no powder and no softener. [1]
- Rinse twice so residue does not sit on the finish. [1]
- Dry completely, then give about 20 minutes of gentle heat if the label allows. [1][2]
- Bead test: flick a few drops of water on the thighs and knees. If they bead, you are done.
- If they soak in, use a spray-on or wash-in DWR product per its instructions, then heat again. [1]
The tick-season conflict
If you also use the CDC tick routine, note the clash: CDC suggests 10 minutes on high heat to kill ticks on dry clothes [4], while GORE-TEX says not to dry its outerwear at high temperature [1]. Your pants' label decides. If it allows high heat, the tick step and the reactivation step can be the same dryer run. Also remember Arc'teryx lists bug spray among the contaminants that make a finish wet out, so pants worn with repellent may need washing more often. [2]
Worked example: invented muddy pants
After a muddy weekend, water soaks into the knees of a hiker's pants instead of beading. They close the zips, wash with about 30 ml of liquid detergent and no softener, rinse twice and line dry overnight, then tumble 20 minutes on gentle heat as the label allows. Water now beads everywhere except the knees, where wear has removed the finish. They spot-treat the knees with a spray-on repellent and heat again, rather than buying new pants. [1][2]
Our view, and the no-purchase option
Do not replace pants because water stopped beading. Dirt and residue are the first suspects, and a proper wash and gentle heat cost nothing extra. Buy a re-treatment product only after a clean wash and heat fail the bead test. If you need protection from steady rain, buy rain pants rather than different hiking pants.
Questions before you decide
Can I use fabric softener on hiking pants?
GORE-TEX tells owners not to use fabric softener, powder detergent, stain remover or bleach on its outerwear. Softener residue is a common reason a water-repellent finish stops beading.
How often should I re-treat the DWR?
Only when washing and heat no longer bring the beading back. Arc'teryx gives no fixed number of washes and says lifespan depends on use, storage and care.
Will the dryer step for ticks damage my pants?
It depends on the label. CDC suggests high heat for 10 minutes to kill ticks, while GORE-TEX advises against high-temperature drying for its outerwear. Follow the sewn-in label.
Sources & verification
Product details and prices can change. Check the linked provider before buying.
- GORE-TEX: Care Instructions for GORE-TEX outerwear Accessed 29 Oct 2026
- Arc'teryx ReBird: Durable Water Repellent (DWR) care Accessed 29 Oct 2026
- Moosehill: Men's Convertible Hiking Pants Quick Dry Cargo Pants - HikerFlex M015 Accessed 29 Oct 2026
- CDC: Preventing Tick Bites Accessed 29 Oct 2026
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