FuzzFleece™ AD Half-Zip is an active-insulation layer built from Polartec® Alpha® Direct, with lofted fibres set on an open mesh core.
The hydrophobic polyester holds warmth without heavy bulk, moves moisture quickly and continues to insulate when damp. A half zip gives immediate airflow control as effort rises, while flat seams keep the soft, open structure comfortable against the body.
It works as a breathable outer layer on cold, dry runs or as low-volume insulation beneath a shell when wind and precipitation arrive.
