Men's Core Sleeveless Base Layer

The ambient range this piece is built for at a steady riding effort. Wind chill and rain sit outside this measure, so on exposed or wet rides pair it with a shell or an additional layer.

The seasons this piece is built for, based on its fabric weight, venting and insulation. Outside that range, plan to layer.

How readily the fabric moves heat and moisture vapour away from the skin. Higher values mean maximum airflow for high-output efforts. Lower values prioritise protection over venting.

The degree of deliberate pressure the garment applies to the muscle beneath. Higher values hold the muscle more firmly for support on longer efforts. Lower values sit closer to a second skin fit.

How much abrasion, pilling and repeated wear the fabric and construction are built to withstand. Higher values suit daily training and rough conditions. Lower values prioritise lightness and packability over long-term wear.

How much of your body heat the piece retains. Higher values suit cold, low-intensity or stop-start riding. Lower values keep you cooler when working hard.

How much freedom of movement the cut and fabric allow. Higher values mean more stretch. Lower values are more structured, compression-focused fit.

Resistance to rain and road spray, from light shower resistance at the low end to sustained rain protection at the top. Higher water protection generally trades against breathability.

How effectively the fabric blocks wind and the chill it carries. Higher values suit exposed descents and cold headwinds. Lower values allow more airflow.