Reviews You Can Rely On

REI Co-op Midweight Tights - Women's Review

A super inexpensive synthetic base layer option
REI Co-op Midweight Tights - Women's
Photo: rei
  • 1
  • 2
  • 3
  • 4
  • 5
Price:  $50 List | Check Price at REI
Pros:  Smooth and silky, good breathability, easy to wear on its own, cute and fitted style, affordable
Cons:  Not super durable, absorbs and holds water, stinky after a month of heavy use.
Manufacturer:   REI
By Amber King ⋅ Senior Review Editor  ⋅  Nov 20, 2019
  • Share this article:
Our Editors independently research, test, and rate the best products. We only make money if you purchase a product through our links, and we never accept free products from manufacturers. Learn more
61
OVERALL
SCORE

RANKED
#10 of 10
  • Warmth - 30% 4
  • Breathability - 30% 8
  • Comfort and Fit - 30% 6
  • Durability - 10% 7

Our Verdict

If you are seeking a cheap pair of base layers, the REI Co-op Midweight Tights - Women's is a synthetic option to consider. With a retail price that is the lowest in this review, it offers performance on the same level. The thinner materials do good work to breathe with some warmth. Unfortunately, when layered underneath a pair of pants that aren't very breathable, and you being to sweat, these bottoms tend to absorb water and have a harder time drying out. While they are comfortable and can be worn on their own, this isn't our favorite base layer bottom to recommend. However, its low price is pretty attractive, and if you just need a layer for general cold-weather wear, it is functional.

Compare to Similar Products

(change comparison)
 
Awards   Best Buy Award Top Pick Award Best Buy Award 
Price $50 List
Check Price at REI		Check Price at REI
Compare at 3 sellers		Check Price at REI
Compare at 2 sellers		$65 List
Check Price at REI		$60 List
$59.99 at Amazon
Overall Score Sort Icon
61
82
75
72
71
Star Rating
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
Pros Smooth and silky, good breathability, easy to wear on its own, cute and fitted style, affordableWarm and cozy, will keep you dry, improved fitAmazing breathability, comfortable on the skin, great fit, good warmth, affordable, cute colors and designsVery breathable, ultralight construction, quick drying, great snug fitExcellent value, very warm, breathable, cute color options, comfortable waistband, versatile fit
Cons Not super durable, absorbs and holds water, stinky after a month of heavy useLacks durability when worn alone, not the most technical or breathable optionLess durable than previous versionNot as comfortable as merino fabricStretches out over time
Bottom Line A super inexpensive synthetic base layer optionA versatile merino wool bottom for cozy winter days of activity or inactivityA synthetic long underwear bottom with exceptional value and versatile applicationsA highly breathable layer that dries quickly, making it exceptional for intense cool to cold weather activityA merino wool pant that offers an excellent value
Rating Categories REI Co-op Midweight... Smartwool Merino 25... Patagonia Capilene... Odlo Performance Li... Meriwool Merino The...
Warmth (30%)
4.0
9.0
8.0
5.0
9.0
Breathability (30%)
8.0
7.0
7.0
9.0
6.0
Comfort And Fit (30%)
6.0
9.0
7.0
8.0
7.0
Durability (10%)
7.0
7.0
9.0
6.0
5.0
Specs REI Co-op Midweight... Smartwool Merino 25... Patagonia Capilene... Odlo Performance Li... Meriwool Merino The...
Material 92% polyester/8% spandex 100% merino wool 100% recycled polyester 69% polyester/27% polyamide/4% elastane 100% merino wool
Fabric weight (g/m²) N/A 250 g/m² N/A N/A 250 g/m²
Our weight class assessment Lightweight Midweight Midweight Lightweight Midweight
Measured Weight (size medium) 6.4 oz 7.3 oz 5.6 oz 3.1 oz. 7.8 oz
Cuts avaliable Full length 3/4 length, full length, onsie (full body w/ hood) Full length Full length Full length
Smelly over time? Yes No Yes No No
Odor control fabric n/a Naturally odor resistant HeiQ Fresh N/A Naturally odor resistant

Our Analysis and Test Results

These midweight bottoms are made from 100% synthetic materials and provide a comfortable feel when wearing them. They are stylish enough to wear on their own but lack performance in extreme temperatures. Built for the outdoorswoman that likes to get out in the winter, but doesn't need amazing thermoregulation performance, it offers sufficient cold protection at a very low price.

Performance Comparison


The REI Co-op Midweight provides good comfort on the go. Its thin...
The REI Co-op Midweight provides good comfort on the go. Its thin design promotes great breathability. We are just let down that the fabrics hold moisture, especially underneath another layer.
Photo: Amber King

Warmth


This synthetic base layer bottom is built with midweight comfort but offers very little in the way of warmth. While the fabric knit isn't as well-spaced apart as other synthetic contenders that breathe a little better, its knit tightly together. While this offers warmth underneath a layer, the thinness of the fabric leaves little for insulation. Wear it with a pair of insulated pants on a cool day in the mountains. Just know that this layer is specific for wicking and breathing. While it's called a 'midweight' option, it seems more lightweight when we wear it.

Testing out this base layer on a snowy hike in the mountains of...
Testing out this base layer on a snowy hike in the mountains of Colorado.
Photo: Amber King

Breathability


The fabric allows a nice amount of airflow when wearing them on their own. Under another pair of pants, they also offer great wicking potential. The downfall of this base layer bottom is when the upper layer that it is layered under doesn't ventilate. Unfortunately, it is constructed with the same fabric through the width of the fabric.

A look at the thinner fabrics of the REI Midweight base layer bottom.
A look at the thinner fabrics of the REI Midweight base layer bottom.
Photo: Amber King

This means there is no buffering fleece layer or additional knit layer that the moisture can sit in, away from the skin. When the layer can't breathe, it will hold moisture, which inevitably can lead to cooling. While it breathes well on its own, the knit construction takes more time to dry out than other synthetic layers. As a result, we'd leave this at home for days where it's especially cold. That said, it's great to wear as a running bottom in the winter, or layered underneath a more breathable top layer.

Early morning runs are a great place for this bottom. While it has...
Early morning runs are a great place for this bottom. While it has trouble breathing under other layers, it does exceptionally on its own.
Photo: Amber King

Comfort & Fit


The fabric to the touch is super silky smooth and comfortable. When you slide it on, it feels really, really good on the skin. It's one of the most comfortable synthetic base layers that we've had the pleasure of testing. However, it only earns an average score in this category because it's not plush or super cozy wither. The waistband is a simple elastic with a seam that isn't completely flat, but not uncomfortable to wear either.

Click to enlarge
Click to enlarge
A look at the relative fit on a 5"6, 145 lbs woman.
A look at the relative fit on a 5"6, 145 lbs woman.
Photo: Amber King

Given the fabric construct that holds moisture, it gets cold after you slow down in it. So, wearing it form the hill inside is totally possible, but not the coziest base layer to do so with. In addition, the fabric holds stench after heavy use that is hard to rinse out in the washing machine.

A look at the thinner waistband that is comfortable against the skin.
A look at the thinner waistband that is comfortable against the skin.
Photo: Amber King

It offers a fitted design and works nicely under a skirt or on its own. We love that the appearance isn't too technical and can even be worn out amongst friends with its cute pattern. Fit is true to size, and the stretchiness of the fabric provides versatility for all shapes and sizes. Overall, it's comfortable with silky-like fabrics, but not a top performer in this category.

The stretchy fabrics make for a great fit for most.
The stretchy fabrics make for a great fit for most.
Photo: Amber King

Durability


While made of synthetic materials, the fabric does pill after just a few washes. The stitching looks solid, but not nearly as durable looking as other synthetic contenders tested. Given that it holds stench, its devalued as well.

A look at the face fabrics of the REI synthetic midweight.
A look at the face fabrics of the REI synthetic midweight.
Photo: Amber King

Value


You simply can't beat the price on this one. We considered it as the Best Buy winner but decided on giving that to a bottom that offers better performance. While it's not the best out there, it's not the worst either. If you seek an inexpensive base layer, this is a good option to consider.

Running it out in cold mountains is a great place for an...
Running it out in cold mountains is a great place for an ultra-breathable long underwear layer like the REI Midweight, made of synthetic fibers.
Photo: Edward Kemper

Conclusion


The REI Midweight Bottoms is a synthetic base layer bottom that is silky smooth to the touch. While they don't have the same performance as other high performing merino wool contenders or synthetics, they are thin and offer cool comforts. They stand out for their ultra-low price, even though the value isn't as high as our Best Buy Award winner. These are best for those seeking the lowest price with decent performance across the board.

— Amber King

Ad-free. Influence-free. Powered by Testing.

GearLab is founded on the principle of honest, objective, reviews. Our experts test thousands of products each year using thoughtful test plans that bring out key performance differences between competing products. And, to assure complete independence, we buy all the products we test ourselves. No cherry-picked units sent by manufacturers. No sponsored content. No ads. Just real, honest, side-by-side testing and comparison.

Learn More