20°C starting point
Wear in the carrier
- Light breathable base layer
- Light bottoms if needed
Bring
- Sun hat when appropriate
- Very thin backup layer only if useful
Watch
- Direct sun
- Low airflow
Why this starting point
Use light breathable clothing and avoid unnecessary mid-layers. Prioritise shade and airflow in sun, keep the face visible and check the upper back for heat buildup during the trip.