Rho SV Zip Neck Men's

I’ve been wearing this under my shell on freezing morning hikes, and the hollow-core fleece traps heat noticeably better than any other base layer I’ve tried. The high collar seals out drafts without feeling restrictive.

The deep zip is a lifesaver when I start overheating on the trail—one pull and I get instant ventilation without stripping layers. The high collar sits snug without choking, and the hollow-core fleece definitely delivers on warmth for cold morning starts.

I was skeptical about a fleece being this warm, but the hollow-core material traps heat like nothing else I've worn. The high collar seals out drafts perfectly during cold morning runs.