A sleeveless baselayer helps body temperature regulation and improves rider comfort on those warmer cycle rides in the year Lightweight: Designed to be lightweight and unobtrusive under your jersey, this baselayer reduces the chance of chafing, and is minimal to avoid bulking Air Permeable: The fabric is air-permeable, allowing for better breathability and keeping you cool during high-intensity activities Quick-Drying: The lightweight fabric dries really quickly as the air circulates the garment, keeping you comfortable even after an intense workout when sweating hard Moisture-Wicking: The moisture-wicking technology draws sweat away from your skin, helping to keep you dry and cool Antibacterial: Built-in antibacterial properties keep odors at bay, maintaining freshness even during long wear. Can be reinstated with an aftermarket product such as Storm Odor Crunch, containing Polygeine At Madison, we pride ourselves on offering an excellent product with aftercare to match. That's why this product is covered by our Limited Lifetime Warranty