Black Diamond Coefficient Beanie

• Soft Polartec fleece traps heat efficiently while staying breathable enough to prevent overheating once you're working hard
• A genuinely lightweight, low profile build means it layers easily under a hood or helmet without adding bulk
• Stretchy construction keeps a snug, secure fit that stays put no matter how hard you're pushing
• Barely there feel means you can wear it for the whole run without constantly adjusting it

• Weight: 23g
• Materials: Polartec Light Weight Power Grid Fleece, 90% polyester, 10% elastane, 119gsm
• One size fits all
• Low profile, helmet compatible fit

• Cold weather running, early starts, and winter trail sessions where you need warmth without overheating
• Layering under a hood or helmet for extra cold days
• High output activities where breathability matters as much as warmth
• Less suited to low output, everyday cold weather wear where maximum warmth matters more than breathability. The Black Diamond Light Knit Line Beanie is a better pick from our range there, with a warmer, more traditional knit build for standing around rather than running

The Coefficient LT Beanie solves a real problem for winter runners, staying warm without ending up with a sweaty head twenty minutes into a run. It's genuinely light enough to forget you're wearing, but still makes a noticeable difference on frosty mornings. Paired with the Coefficient LT Headband, it rounds out a simple, effective cold weather head layering system for anyone training through winter.