Pearl Izumi visits the A2 wind tunnel to quantify clothing's speed Is wearing a smaller jersey faster? How much wattage does unzipping your jersey cost you? And how much of a speed difference is there ...

Main fabric: 46% recycled nylon, 38% polyester, 16% elastane These are the latest update to Pearl Izumi’s top of the range cargo bib shorts thanks to the ‘Pro’ denotation, and self described as ...