Bike and Cycling Underwear: What to Wear Under the Lycra

March 04, 2025

Bike and Cycling Underwear: What to Wear Under the Lycra

If you've ever done a long ride and ended up uncomfortable well before you hit your target distance, there's a good chance your bike and cycling underwear was part of the problem. Most riders focus on their chamois, their shorts, their saddle, and don't think much about what's underneath. But what you wear under the lycra has a genuine impact on comfort, especially on rides that go past the 2-hour mark. Getting it right makes a real difference.

What I think matters most in bike and cycling underwear is the seam placement and the fabric weight. Seams in the wrong spot turn into pressure points that you barely notice at 30 minutes but feel like sandpaper by hour 2. Fabric that's too heavy traps heat and moisture. Too light and it doesn't provide enough structure for extended effort. Finding the right balance is the key to something that performs across the full duration of a serious ride.

I ride with a group on weekends and one of the blokes spent months dealing with saddle discomfort that he assumed was a fitting issue. He went through 2 professional bike fits before someone suggested his bike and cycling underwear might be contributing. He changed it up, went with a lightweight, low-seam option from Barramundies, and said the improvement on his next long ride was significant. The fit problem turned out not to be the bike at all.

In my opinion, the underwear side of cycling kit gets overlooked because it's not the most exciting piece of gear to talk about. But the right bike and cycling underwear is foundational to everything else working properly. Barramundies makes options that handle extended riding conditions without adding bulk or heat. If you're serious about your riding and you haven't thought carefully about what you're wearing under the shorts, it's worth doing now.