Short answer
Chalk stripe is a worsted, stripe cloth of about 290–330 g/m², at its best in autumn / winter. A softer, broken stripe drawn in chalk — bolder than pinstripe, made for flannel.
At a glance
FamilyWorsted, stripe
Weight290–330 g/m²
SeasonAutumn / Winter
Best forWinter suits, double-breasted
Choosing Chalk stripe at your fitting
Tell the tailor your cities and your calendar — Chalk stripe earns its place when the answer matches autumn / winter 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.