What Our Gearhead® Experts Are Saying: “This Skin Layer feels like it disappears the second you put it on. The mesh is insanely breathable, and the stretch wraps around your torso without any pressure points. I love the raw-cut arm openings—they layer under jerseys perfectly with zero bunching. It’s one of those baselayers that makes hot rides feel way more manageable.” We pull on the Assos Tank Skin Layer P1 when we want a featherlight foundation that disappears under our jersey while keeping us cool during long rides. Its new ultra-elastic mesh creates a true second-skin fit that hugs our core without constriction, optimizing moisture transfer during climbs, sprints, and warm-weather training. The open-structured fabric boosts airflow and cooling, helping us stay dry even when the pace picks up. The deep-cut collar seamlessly integrates with both endurance and racing-fit jerseys, while the raw-cut armholes reduce bulk for an impossibly clean layer beneath everything we wear. With permanent carbon-infused odor control and all-day breathability, this baselayer feels dialed for riders who demand comfort and performance in equal measure.