Assos Spring Fall SS Skin Layer P1Fast and Furious The Spring Fall SS Skin Layer P1 is the ultimate foundational layer for cycling in cool conditions. This reengineered base layer enhances core warmth, boosts breathability, and provides additional throat coverage while being 15% lighter than its predecessor, all in a short-sleeve format that pairs under any Spring Fall jersey or jacket. Features15% lighter than the previous generation, with increased collar coverage Tighter front panel weave, provides insulation where warmth is most critical, while open mesh on the back and underarms boosts breathability Carbon fiber-infused textile, provides permanent, antimicrobial odor control properties Second-skin fit with single-piece construction, maximizes thermoregulating properties and push-pull moisture management Active microclimate temperature modulation, wicks away excess body heat to prevent overheating during full-gas efforts SPECIFICATIONSIntended Use Road Cycling, Shoulder-Season Layering Fit Men's - Second-Skin Material71% PP, 22% PA, 4% EA, 3% CFSleeve Style Short Sleeve Sizing Size Extra Small Small Medium Large Extra Large XX-Large3X-Large Chest (in)34. 6 - 35. 8"36. 2 - 37. 4"37. 8 - 39. 4"39. 8 - 41. 7"42. 1 - 44. 5"44. 9 - 47. 6"48 - 50. 8" | Assos | Spring Fall Ss Skin Layer P1 Men's | Size 0 In Anthracite Grey