BillyD wrote a review of SmartWool NTS Lightweight Wind Brief - Men's on February 12, 2012
As a Nordic Racer I have to wear these special underpants everyday I train. The SmartWool version is by far the best as it is not only a technical racing fit (order a size down) but feels light and yet totally protects your gear. Best part for any road warrior you can wear these things all day, hang em up at night, and they are dry and you'd never know they'd been used. Also since it's wool it washes easily in a sink if you are so inclined. Best piece of gear I own for what I do.