Best Running Underwear for Men: 2021 Guide

Best Running Underwear for Men

Finding the right underwear, the best boxer briefs or trunks to wear under your running shorts can be a bit like finding the right pair of jeans. It’s hard to find the perfect pair and when you do, you never want to get rid of them.

There are many different factors to think about when looking for the right pair of underwear for running. With all the various athletic brands out there promising their product is the best, shopping for running underwear can seem like an impossible task. It does not matter if you are a trail runner or road runner, a competitive runner, or a leisure runner; the need for a reliable pair of running underwear is universal. The most important thing when you’re looking for the perfect pair is comfort.

So, we have written this guide to help you know what to look for when searching for the perfect running boxer briefs and running trunks.

Things to look for when you’re buying athletic underwear for running:

Athletic underwear styles traditionally have three different length: three-inches for trunks, six-inches for boxer briefs and nine-inches for longer cycle-jam length boxer briefs.

Short Inseam ( 3 inches ) – These running trunks provide the best ventilation and range of motion, making them perfect for competitive runners.

Medium Inseam ( 6 inches ) – If you’re someone who runs on both tracks and trails or simply pounds the city pavement, this is the length for you. Running boxer briefs with a six-inch inseam provide versatility and are the most popular choice among runners.

Long Inseam ( 9 inches ) – These hit just about the knee and are great for helping trail runners protect their legs from branches and insects. If you choose this length, make sure you select an anti-chafing material.

Teamkit produces two styles that are proven favorites of runners around the globe. 1- The men's running Boxer Briefs with six-inch inseams and 2- The men's running Trunks with three-inch inseams.

Teamkit outdid themselves with these running boxer briefs and trunks. They feature the most innovative material from the best activewear mill in Italy, Eurojersey SpA. The silky soft fabric is packed with performance benefits, the material will move every which way that you do whilst keeping you cool, dry and chafe-free. Teamkit underwear is specifically designed to keep a runner comfortable and cool on every run. Eliminating the dreaded swamp-butt that is so typical of cotton underwear. Finally, Teamkit Underwear best boxer briefs and best trunks have a U.S. Patented designed pouch and thread-free, seamless construction that provides chafe-free seams and optimized stretch hems. 

Teamkit running undershorts have a very light compression that holds a runner’s leg muscles without squeezing them like traditional compression shorts. Teamkit running boxer briefs and trunks are made to target the abductor and glute muscles. Wearing them also provides a layer of UPF Protection.

The super lightweight, 4-way stretch fabric and seam-free construction provide a barely-there feel. Most runners tell us they feel like they are not wearing any underwear at all! As if that wasn’t enough the custom-made microfiber elastic waistband from Europes premier manufacturer, Liebaert of Belgium, stays in place, stretches with your every move and will not dig in or cause any irritation.

If comfort is a top concern  when shopping for the best running underwear, then these runners’ boxer briefs and trunks are the right pair for you. Their engineered fit and light compression make them perfect for the everyday runner as well as long distance runners.

Read Also: Men’s Premium Running Underwear for summer


Chafing results from your skin and fabric rubbing against each together to create red, irritated, painful patches that can ruin a good run. Areas that are quick to chafe include thighs and the groin. Teamkit makes the best running underwear for men because it is designed to prevent skin irritation that causes chafing. Our U.S. Patented Design eliminated scratchy threads, optimizes the stretch of bonded seams and hems, and the Clubhouse Pouch holds and supports with a unique 3-D design so that you don't need to be constantly adjusting. Teamkit offers a quick-dry material made in Italy with a moisture-wicking, anti-pinch waistband and hi-tech threadless bonded seams for optimized stretch. The thread-free leg hems eliminate scratchy threads that cause chafing. The bonded hems stretch and recover, which prevents your underwear from riding up. The result is the best men's athletic underwear.


If underwear is going to be snug, it needs to be soft and Teamkit features lightweight, super-soft fabric that's easy on your skin and a tagless waistband. You're already in the gym and probably experiencing enough discomfort as it is. Teamkit's Italian stretch fabric from Eurojersey SpA. allows for multi-direction, 4-way stretch movement, so you're good whether you're running in the park or on a long-distance run.


With a comfortable waistband and no opening, Teamkit performance Boxer Briefs and Trunks are as close to basic compression shorts as underwear can get without claiming to be compression shorts. They are contour a mans body but won't increase blood flow like compression might. Our underwear will keep your man parts dry with sweat-wicking material. There's also no ride-up hems, so you won't have to worry about bunching or digging out wedgies while cycling or running.


6-inch and 3-inch inseams help to prevent ride-up, so worry not. You will not have to go digging into your crotch to fish out your underpants. Teamkit has all the essential features, quick-dry material, stitch-free bonded seams for comfort, breathability, and elasticity, so they hold their integrity. There's also  our 3-D shaped pouch with volume for unrestricted movement—one less thing to worry about. Teamkit makes the best boxer briefs and best trunks for running and all sports.

Read Also: Teamkit Makes the Best Workout Underwear for Men


Sustainable Fabric for Sustainable Underwear

At Teamkit, we partner with the best and most ecologically responsible factories in Europe. We source only the finest sustainable fabrics and materials tested for over 100 non-harmful substances, and the article must be certified as harmless in human ecological terms.

Standard 100 by Oeko-Tex is one of the world's best-known certifications for textiles tested for harmful substances.

Every material we use to make Teamkit Underwear is non-harmful.
Our suppliers all test with Oeko-Tex and receive Oeko-Tex Standard 100 certification.

These include:

Fabric: Eurojersey Italy Spa art. GGAQ Oekotex Standard 100
Thread: TWD-Fibres Germany
Elastic Waistband: Liebaert Belgium
Adhesives: Bemis Worldwide, Fait Plast Italy, Framis Italy
Label: Framis Italy

Standard by Oeko-Tex is one of the world's best-known labels for textiles tested for harmful substances. 99% of the materials we use to make Teamkit underwear from the knit jersey down to the thread, testing by Oeko-Tex and certified Oeko-Tex Standard 100.

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