We believe a good base layer should enhance the riding experience not distract from it. It should feel great against your skin properly wick moisture & stretch for a fit that makes you forget you have it on. The lightweight engineered knit Mens Chrono Base does just that. It features nylon thread to ensure a soft feel while polyester content pulls moisture away from your skin. It has enough stretch to allow freedom of movement & fit your body comfortably. Its also extremely light & tucks easily under a bib short without any bunching.