The world's most in-depth and scientific reviews of gear

Patagonia Sender Review

An improvement on Patagonia's previous synthetic underwear, this pair is light and breathable, but not as durable as we'd like
Patagonia Sender
Photo: Patagonia
  • 1
  • 2
  • 3
  • 4
  • 5
Price:  $30 List | $30.00 at Backcountry
Compare prices at 2 resellers
Pros:  Breathable for synthetic, soft mesh
Cons:  Fabric runs easily, nylon holds some smell
Manufacturer:   Patagonia
By Ethan Newman ⋅ Review Editor  ⋅  Sep 10, 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
63
OVERALL
SCORE


RANKED
#7 of 8
  • Comfort - 35% 8
  • Breathability - 20% 6
  • Odor Control - 20% 4
  • Durability - 15% 4
  • Drying Time - 10% 9

Our Verdict

The Sender boxer brief is Patagonia's latest attempt at a decent pair of synthetic underwear. It's definitely an improvement from the days of Capilene, and it is our favorite synthetic underwear we've tested. They are best used in hot weather, where you'll find the most benefit from the thin fabric and fast-drying capabilities. However, it still has the same issues that thin synthetic fabrics have: durability and odor. We think this is a step in the right direction for synthetic underwear, but there is still room to improve.

Compare to Similar Products

 
Patagonia Sender
This Product
Patagonia Sender
Awards  Editors' Choice Award Top Pick Award Best Buy Award  
Price $30.00 at Backcountry
Compare at 2 sellers
$36.00 at Backcountry
Compare at 3 sellers
$40.00 at Amazon$23.43 at Amazon
Compare at 2 sellers
$17.97 at Backcountry
Compare at 3 sellers
Overall Score Sort Icon
63
74
72
66
64
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 Breathable for synthetic, soft meshDurable, soft, good odor controlLoose comfort, durable, soft fabric, respectable odor controlInexpensive, breathable, layers wellInexpensive, supportive, breathable
Cons Fabric runs easily, nylon holds some smellHeavy, extra thick waistbandLoose fit not for active use, bunches up under tight-fitting clothingthin waisband, legs roll upDoesn't block odor well, less refined fit
Bottom Line Our favorite synthetic underwear, but we wish it had better odor control and durabilityIt works and stands the test of time, whether on a plane or in the backcountryThe Vapor is comfy and durable for casual use and travelAn inexpensive but high quality pair of boxer briefsIf the price of most travel skivvies is a bridge too far, this pair is worth a hard look
Rating Categories Patagonia Sender Merino 150 Boxer Brief Duckworth Vapor Brief Echo Boxer Brief Give-N-Go Boxer Brief
Comfort (35%)
8
7
8
7
7
Breathability (20%)
6
7
6
8
5
Odor Control (20%)
4
8
7
4
4
Durability (15%)
4
9
8
5
8
Drying Time (10%)
9
6
6
10
9
Specs Patagonia Sender Merino 150 Boxer... Duckworth Vapor... Echo Boxer Brief Give-N-Go Boxer...
Material 89% Recycled nylon, 11% spandex mesh 87% Merino wool, 13% nylon core 50% Recycled polyester, 38% merino wool, 12% modal 100% Polyester 94% Nylon, 6% Lycra spandex
Inseam (inches) 6 in 6 in 6 in 6.4 in 5.5 in
Measured weight (ounces) 2.4 oz 3.2 oz 3.1 oz 2.2 oz 3.2 oz
Fly? No Yes Yes Yes Yes
Flat-lock seams Yes Yes Yes Yes Yes
Air Dry Test 1 hrs 2 hrs 2 hrs 45 min 1 hrs
Dryer safe? Yes, tumble dry low Yes, tumble dry low No Yes Yes, tumble dry low

Our Analysis and Test Results

The Sender boxer brief is Patagonia's newest underwear for men, combining a light nylon mesh weave partnered with HeiQ Fresh odor control to combat synthetic fabric's biggest downfall. Along with a flyless design and flatlock seams, the Sender is designed to be a low profile, yet supportive pair of underwear. In general, we liked it, but there is room for improvement.

Performance Comparison


The Patagonia Sender Boxer Briefs are light and airy, and our...
The Patagonia Sender Boxer Briefs are light and airy, and our favorite synthetic underwear, but still fall prey to the downfalls of synthetic fabrics.
Photo: Ethan Newman

Comfort


The Sender boxer briefs are a very comfortable pair of underwear. The waistband is thin enough not to be noticeable but thick enough not to roll. The mesh fabric feels light and airy, but substantial enough to keep everything in place. The legs didn't roll except when we wore them with a fairly tight pair of pants, which is forgivable. The Sender doesn't have a fly which, although we prefer to have one, the lack of extra fabric makes the boxer briefs a little lighter and less constricting.

The waistband of the Smartwool Merino 150 and the Patagonia Sender...
The waistband of the Smartwool Merino 150 and the Patagonia Sender briefs, compared.
Photo: Ethan Newman

Breathability


For a synthetic boxer brief, the mesh design of the Sender keeps things breathing pretty well. The mesh is actually light enough to see through. Unlike some synthetics, the textured mesh prevents these boxer briefs from feeling sticky or swampy. However, they still aren't quite as breathable as a lightly woven natural fiber like wool.

The mesh of the Sender boxer briefs is so light you can see through...
The mesh of the Sender boxer briefs is so light you can see through it!
Photo: Ethan Newman

Odor Control


According to Patagonia, the Sender boxer brief is imbued with HeiQ Fresh durable odor control, which is a non-silver based "biopolymer" to reduce stink on synthetic and cellulosic fibers. It's also supposedly sustainable and biodegradable, which is a nice touch. All things considered, it works a bit better than the other synthetic odor control coatings we've encountered. However, it's hard to get away from the eventual stink of synthetic fabrics, and after wearing these for a few days in a row, the Sender boxer briefs start to smell like other synthetic underwear. It does do better after washing than other synthetics, but not as well as the woolies we tested.

Durability


Unfortunately, because the mesh is woven so lightly, we didn't find these to be as durable we'd like. After a month of regular use, there were a few runs in the fabric, and some mild pilling, mostly on the backside. However, the seams held up, as did the waistband, which still is snappy and hasn't wrinkled at all.

After a month of regular use and washing the Patagonia Sender boxer...
After a month of regular use and washing the Patagonia Sender boxer briefs had some runs in the nylon.
Photo: Ethan Newman

Drying Time


The light mesh and hydrophobic properties of nylon kept the drying time down on the Sender boxer briefs. It was the quickest to dry out of all the pairs we tested, using the towel rolling trick and then line-drying all the underwear.

The thin mesh of the Sender boxer briefs dried quite fast.
The thin mesh of the Sender boxer briefs dried quite fast.
Photo: Ethan Newman

Value


The Sender boxer briefs aren't cheap, but they are a bit less than most of the wool pairs we tested. They are the most expensive synthetic pair, however. If you're willing to spend the money to get a really nice pair for traveling, we think a wool option would be better, and if you're looking for a bargain synthetic, there are pairs ten bucks cheaper that work almost as well.

Synthetic underwear dries faster than most wool, due to synthetic...
Synthetic underwear dries faster than most wool, due to synthetic fibers' hydrophobic qualities.
Photo: Ethan Newman

Conclusion


The Patagonia Sender boxer brief is a step up from the days of Capilene underwear, but it's still stuck somewhere in the middle of travel underwear competition. We liked the fabric, but it wasn't very durable. We thought that the odor control worked better than other synthetics, but not as well as the natural odor control from wool fibers. The price is lower than some, but not really a bargain. Overall, we liked them for some things, especially hot weather, where we might be swimming, but we'd like to see some improvement before we'd pick these over some other options.

Ethan Newman