Herren Merino 150 Anatomica Kurzarm-Crewe-Oberteil

The fit is spot-on for a slim layer, and the 150gm fabric feels featherlight against my skin—I forget I'm even wearing it. It's held up through a few washes without losing any stretch, which is exactly what I wanted for everyday wear.

I was skeptical about merino for warmer weather, but the 150gm corespun fabric breathes surprisingly well during a morning hike. The stretchy cuffs stay put without pinching, and the slim fit layers smoothly under a flannel.

The slim fit is perfect under a button-down without feeling tight, and the corespun weave gives it real durability for such a lightweight base layer. I've worn it on a few chilly morning runs and it breathes well even when I start sweating.