REI Co-op Active Hipster Underwear - Women's
The women's REI Co-op Active Hipster underwear is soft to the touch and comfy with every stride. These briefs wick moisture and dry quickly for an active day out.
- Hipster style features a lower rise and slightly longer outseam than our Active Bikini underwear
- Stretchy polyester mesh is constructed with modest seams and trim to keep you comfortable
- Moisture-wicking and quick-drying for a fast recovery after sweating—and washing
- Pairs with REI Co-op Active bralette (not included)
- Machine wash warm; use only non-chlorine bleach, when needed; tumble dry low
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
Imported.
View all REI Co-op Women's BriefsBest Use | Multisport |
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Underwear Style | Brief |
Fabric | 86% polyester/14% spandex mesh |
Moisture Wicking | Yes |
Quick Drying | Yes |
Gender | Women's |
Sustainability | From a Climate Label Certified brand |
XXS | XS | S | M | L | XL | 1X | 2X | 3X | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18W | 20W | 22W | 24W | 26W | |
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Numerical Size | 00 | 0-2 | 4-6 | 8-10 | 12-14 | 16 | 18 | 20-22 | 24-26 | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 |
Bust | 31 | 32-33 | 34-35 | 36-37 | 38.5-40 | 41-42.5 | 43-45 | 47-49 | 51-53 | 32 | 33 | 34 | 35 | 36 | 37 | 38.5 | 40 | 42.5 | 45 | 47 | 49 | 51 | 53 |
Sleeve Length | 29.5 | 30 | 30.5 | 31 | 31.5 | 32 | 32.5 | 33.5 | 34.5 | 30 | 30 | 30.5 | 30.5 | 31 | 31 | 31.5 | 31.5 | 32 | 32.5 | 33.5 | 33.5 | 34.5 | 34.5 |
Waist | 24.5 | 25.5-26.5 | 27.5-28.5 | 29.5-30.5 | 32-33.5 | 34.5-36.5 | 37.5-39.5 | 40.5-42.5 | 44.5-46.5 | 25.5 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 | 32 | 33.5 | 36 | 38.5 | 40.5 | 42.5 | 44.5 | 46.5 |
Hip | 34 | 35-36 | 37-38 | 39-40 | 41.5-43 | 44-46 | 47-49 | 50-52 | 54-56 | 35 | 36 | 37 | 38 | 39 | 40 | 41.5 | 43 | 45.5 | 48 | 50 | 52 | 54 | 56 |
Inseam | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements. Some women's pants are available in petite and tall sizes. Typically petite sizes fit women 4'11" to 5'3". Regular sizes fit women 5'4" to 5'8". Tall sizes fit women 5'9" to 5'11".
PETITE: Generally, as compared to regular sizes, petite sizes are 2.5 inches shorter in inseam, 1 inch shorter in body length, 1.25 inches shorter in sleeve length and ¾ inch shorter in total rise.
TALL: tall sizes are 3 inches longer in inseam, 2 inches longer in body length, 2.5 inches longer in sleeve length and 1.25 inches longer in total rise.
Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.
Inseam is measured to the floor.
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.


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Completely ripped apart
I have a few pair of these hipsters maybe from a year or 2 ago and loved them. Bought a new pair and it completely ripped apart in the initial wash.
Would be great--if they didn't move
This cut fits (me) a bit better than the bikini equivalent, but have the same problem: they move around a *lot*. If they didn't move, they'd be heaven. They feel like wearing absolutely nothing... until they start shifting around (which happens almost immediately). They're definitely not for the curvier/bigger butt people, because that seems to be the area of highest movement.
perpetual wedgie for big booties
Okay, honestly if your butt is bigger than your lower abdomen than the fit will result in a perpetual wedgie. I measured as directed and ordered according to size chart and I have extra material in the front but not in the back. It’s really aggravating.
Expensive Polyester Undies Don't Hold Up
Sizing was accurate but they will roll down on you right away. I bought these for working out but they didn't stay up through the workday while I was not very active. They are super soft that is the only reason I gave them 2 stars. At this price point even on sale they are not worth it for polyester undies. Also I recognized that they hold onto odor much more than other more breathable fabrics.
My go-to underwear for thru hiking
I wore these on two thru hikes so far (PCT '20 and AZT '21) and plan on wearing them for an upcoming CDT thru hike in 2024. These are lightweight, soft, super comfortable, quick drying, and surprisingly durable. The two pairs I took on the PCT lasted over 1500 miles before needing to be replaced and I still use the ones I took on the AZT. Bonus: they don't hold smells!
Great for active sports in hot weather
Very comfortable, especially in hot weather. Stay put for active sports. Breathable. Medium hipster fits my 5’2” 120# body. I have melted a few o er the years in too warm a dryer.
barely cover anything!
These have the same style name (active hipster) as a name brand that I love but are much less expensive so I thought I would give them a try. The fabric is nice, but they run SO small! Tiny overall. I don't think I will try another size since they also sit very, very low. Not at all like the other brand.
Comfortable but terrible quality
These were very comfortable, but fell apart after a month of wearing.
Perfect for Hot Weather Adventures
I won’t hike or backpack in any other underwear after using these on two 4 day long backpacking trips. They are so breathable and air dried quickly after a swim. Bonus-no wedgies either.
Great hiking/travel undies
Excellent, invisible fit. They don’t ride up and have a “barely-there” feel. Also super quick drying. A cheaper alternative to Ex Officious but time will tell if they are as long lasting. Would buy again