Best Running Underwear | Runderwear Women’s Running Briefs Review
Mel Berry - Cofounder Women's Sports Store - Endurance Warrior
Let’s be honest running underwear doesn’t usually get a standing ovation. But Runderwear’s Women’s Running Briefs might just change that. They changed my ways….. I stopped going commando!!
Comfort & Fit
The Runderwear Women’s Running Briefs come in five colours and are honestly a revelation when it comes to comfort. From the first wear, they feel like a second skin—soft, lightweight, and designed with runners in mind. The fabric manages to strike that elusive balance between being snug enough to stay in place but not so tight that you feel like a sausage in casing. I’ve worn these on short runs, long runs, and the level of comfort has remained consistent throughout.
The waistband sits perfectly without digging in, and the seamless edges mean no awkward chafing in sensitive areas, an absolute game-changer for anyone who has experienced the horrors of ill-fitting running underwear. If you’re tired of constantly adjusting mid-run or dealing with uncomfortable seams, these briefs will feel like a tiny, glorious gift from the running gods.
Sizing
Runderwear nails the sizing spectrum with these briefs. They come in a range of sizes (S – XL) that actually feel true to their guide, which is refreshing in a market where sizing can often feel like a guessing game. I went with my usual size (L), and they fit like they were tailor-made for me, hugging all the right places without being restrictive. The elasticity adapts to your body shape, making them ideal for different body types and movements. Even after multiple washes, the fit remains consistent, showing that the quality isn’t just skin-deep.
Tip: if you’re between sizes, the briefs’ forgiving stretch might allow you to stick with your usual, but they also won’t leave you feeling suffocated if you size up. Reliable, practical, and worry-free—basically everything we want from running gear
Functionality
Functionality is where Runderwear really shines. These briefs are designed for motion, moisture management, and long-term wear. The lightweight, breathable fabric keeps you cool and dry, even on the sweatiest of runs, while the anti-chafing design means you can conquer those long miles without a single uncomfortable rub. They move with you, not against you, which makes a big difference for anyone who’s had the dreaded “running wedgie” moment. From tempo runs to interval sprints, these briefs stay put and perform consistently, so you can focus on your pace and not on constantly adjusting your kit. In short, they make you feel less like you’re wrestling with your underwear and more like you’re gliding effortlessly down the road—minus the dramatic wind-in-hair movie moments, unfortunately.
Value
At first glance, you might think, “Premium price for underwear? Really?” But the value becomes obvious after just one run. The quality of materials, the thoughtful construction, and the performance benefits all justify the cost. Unlike cheaper alternatives that wear out or lose their shape quickly, Runderwear briefs are built to last, saving you money and frustration in the long run. Plus, the added comfort and anti-chafing technology are practically priceless on long runs. Factor in the bright, fun Fiesta pattern and you’ve got underwear that looks as good as it feels—a small luxury that makes a huge difference in your running experience. For anyone who treats their body and runs seriously, this is a worthwhile investment. Think of it as buying happiness for your lower half.
Recommend
Absolutely 100% no hesitation, I’m a convert after 30 years running commando. They’re a must-have for any runner who values comfort, performance, and a little bit of fun in their kit. Whether you’re a seasoned marathoner or someone who enjoys weekend jogs, these will become your secret weapon for blister-free, friction-free runs. Plus, let’s be honest, running in bright, cheerful underwear is a subtle but undeniable confidence boost. So, if you want to ditch the chafing, avoid the awkward mid-run adjustments, your legs (and your sense of humour) will thank you.
