Weave structure

3/1 twill

A four-thread twill puts three warp crossings on the face for every one below.

Also searched as: Four-end warp-faced twill

Open the interactive guide ↗
Illustrative face of a repeating weave. Warp runs vertically; weft runs horizontally. Colors, yarn thickness and spacing are examples, not a production specification.

How it is made

Each warp passes over three successive picks and under one. The long warp floats create a face that can emphasize a colored warp over a lighter weft.

How to recognize it

Look for a strong diagonal and a face that differs markedly from the reverse when warp and weft colors contrast.

Common uses

  • Denim
  • Chinos
  • Workwear

What to distinguish

It shares a four-thread repeat with 2/2 twill but has unequal face and back interlacing counts.

Sources & further reading

Research checked 2026-09-27. Descriptions are original summaries; references support terminology and construction, not every product sold under a name.

Compare related terms