Black Diamond Coefficient Fleece Jacket

The Coefficient Fleece Jacket uses a lightweight, brushed fleece fabric designed for warmth and breathability. The material is engineered to provide comfortable insulation during active pursuits.

Yes, the Coefficient Fleece is designed as a lightweight layering piece that works well under a shell or over a base layer. Its breathable construction suits high-output activities where moisture management matters.

The jacket is built for active pursuits like climbing and hiking in moderate conditions. Black Diamond's climbing heritage informs the garment's emphasis on mobility and breathability.

The Coefficient Fleece provides lightweight insulation for moderate conditions but is not designed as a heavy standalone winter layer. It functions best as a midlayer in a layering system or as a standalone piece in cool weather.