Assos Spring Fall LS P1 long-sleeved underwear jersey, the first layer for outings when it's cooler, featuring long sleeves to regulate temperature all along the arms and ensure sweat wicks away. The latest generation is lighter, more breathable and features a more versatile thermal insulation gradient to provide more warmth where it is needed most. The new Spring Fall first layer is 15 percent lighter than the previous version. Despite the fewer grams, it also features a more versatile construction, more coverage at the collar, improved odorControl technology, and an even more streamlined fit molded to body lines. The fabric has a tighter warp on the front panel to provide more thermal insulation where it is especially important. More open mesh on the back and under the arms increases breathability and helps actively modulate body temperature, letting excess heat escape to prevent overheating during intense riding moments.

• Fabrics: This Skin Layer features a blend of carbon and polypropylene yarns suitable for cooler temperatures, wicking sweat away from your skin and insulating your torso while keeping you dry and protected and offering total comfort from the get-go.
• Construction: Featuring a tubular knit fabric with no side seams, the thicker Circular Seamless construction gives the softest, most comfortable feel against the skin. The sleeves are sewn directly into the armholes to promote maximum freedom of movement under the upper layers.