Layering starts at the skin, and Assos has been refining this category long enough to know what works. The Equipe NS Skin Layer P1 is a sleeveless base built for warm to hot conditions, designed to sit invisibly under a jersey while doing the real work of moving moisture off your skin and keeping the fabric above from sticking when things get sweaty. If you've ever ridden a hot summer century in just a jersey and regretted it by mile thirty, this is the piece that fixes that problem without adding heat.
The fabric is Assos's Type.122 Skin Foundation, a lightweight mesh-style knit that prioritizes airflow over coverage. The construction is open enough that you can essentially see through it, which is the point — air moves through freely, sweat wicks outward to the jersey where it can evaporate, and the skin underneath stays drier than it would with bare contact against a jersey. The sleeveless cut keeps the armpits and shoulders unrestricted, which matters when you're reaching for bottles or shifting position over long rides.
Fit is the Assos race-cut you'd expect, meaning it sits close to the body without compressing. The hem is cut long enough to stay tucked under bib shorts without bunching, and the neckline is low enough to disappear under any jersey collar, including the deeper V-necks on summer kit. There's no logo on the chest panel and the seams are flat-locked, so there's nothing to chafe or telegraph through a lightweight jersey.... Read More
Where this layer earns its keep is on the days you're tempted to skip a baselayer entirely. A jersey worn directly against skin traps a film of sweat against the fabric, which is why summer jerseys feel heavier and clammier as the ride goes on. The Skin Layer P1 breaks that contact, lets the moisture transfer outward, and effectively turns your jersey into a more efficient cooling layer. It's counterintuitive — adding fabric to stay cooler — but riders who've tried it tend to stop riding without one.
Ice Grey is the only colorway, which makes sense given it's meant to be invisible under everything else. Hand wash or delicate cycle, hang dry, and it'll outlast a lot of the kit you wear over it.
