Short answer
Zephyr is a fine woolen cloth of about 230–260 g/m², at its best in summer. A whisper-light woolen with air in the weave for the hottest city weeks.
At a glance
Choosing Zephyr at your fitting
Tell the tailor your cities and your calendar — Zephyr earns its place when the answer matches summer wear. The shortlist you receive will pair it with one or two alternatives, and the choice is always yours.
Cloth notes are guidance, not inventory: availability varies by season. What is reserved for you is confirmed in your written quotation.