ARC Merino Arm Warmers

Wore these on a 40-mile gravel ride and they never slipped once, even on the washboard sections. The fit is snug without cutting off circulation, and they're thin enough to stuff in a jersey pocket when it warms up.

The grippers are the real deal—I forgot I had them on during a long hike with tons of scrambling, and they never slid down once. The fit is snug enough to feel like a second skin, which I wasn't expecting from a knit.

Used them for a tempo run on a rocky trail and forgot they were on—that's exactly what I wanted. The low-profile grippers held firm without digging in, and the fit is snug enough that there's zero bunching under my jacket sleeves.