Castelli Cold Days Long Sleeve Base Layer Top Black - M

The Castelli Cold Days long sleeve base layer top offers maximum insulation and moisture management for cold rides across the entire Castelli range. It is ideal for fitting between a base layer and a jacket or between a jersey and a jacket. Polartec Alpha fabric is a high quality, soft, stretchy and lightweight insulation. The off-centre half-zip means there is no bulk at the bottom of the torso. The fit is snug.Features:- Polartec Alpha 90 fabric with high active insulation capacity, made from recycled PET- Maximum breathability- Asymmetric zipper- High collar- Temperature range: - 8º / -5º C- Weight: 90 g (Size S)Technology:- Polartec AlphaPolartec technology with active insulation that regulates body temperature during physical activity and when not moving. It also has the latest in breathable technology that eliminates the need to add or remove layers while on the move.