Cotton, wool, and polyester layers ranked for temperature swings
Wool handles repeated temperature changes best because it insulates while managing moisture. Cotton is comfortable when dry; polyester can dry quickly but varies widely by knit and finish.
The practical formula
Start with the piece that has the strictest job, then make every other item compatible with it. Test the outfit sitting, walking, and in the expected weather before adding another piece.
What to check before relying on it
Check fiber content, care needs, opacity, comfort, and whether each layer still works when removed. Use the garment label rather than assuming from a marketing name.
Source note
For label reading and fiber-content claims, see this government guidance (accessed September 16, 2026). Style judgments are editorial and are not sponsored.