What French lace is and why it costs more

French lace — specifically the lace produced in the Calais-Caudry region of northern France — occupies a particular place in the lingerie market: it is the material most associated with quality in fine lingerie, and the one whose price point is most frequently questioned. The price is justified. Understanding why requires knowing what the production process actually involves.

The geography

Calais-Caudry refers to the twin towns of Calais and Caudry in the Nord-Pas-de-Calais region of France, where lacemaking on power looms has been practised since the early 19th century, when English lacemakers brought Leavers loom technology across the Channel. The region now represents the majority of world production of quality power-loom lace.

The European designation "Dentelles de Calais-Caudry" (the Calais-Caudry lace geographic indication) protects the name for lace produced by Leavers loom in this specific region.

The Leavers loom

The Leavers loom is a 19th-century mechanical innovation that replicates — at scale — the complex crossing and looping motions of hand pillow-lace making. A Leavers loom weighs several tonnes, stands several metres high, and operates at a relatively slow speed compared to modern knitting or weaving machinery. The slowness is inherent to the construction method: each thread must be individually controlled to create the complex net structure and motif geometry of quality lace.

A Leavers loom requires a skilled operator to set up, thread, and maintain. The lace programmes — the patterns that determine the motif — are encoded in Jacquard-style cards that have been accumulated over generations of production. New patterns require design, programming, and test production before commercial runs.

The material

Calais-Caudry lace is typically produced in long-staple Egyptian or French cotton thread, which is fine, strong, and takes dye with high fidelity. The net structure of Leavers lace is denser and more complex than knitted stretch lace — the thread intersections are more numerous, the geometry more precise, and the surface more consistent.

Some Calais-Caudry production uses silk or synthetic thread, but the classic construction is cotton. The cotton thread gives the lace a characteristic hand: slightly crisp when first touched, softening with wear and washing into a beautifully broken-in texture.

Why it costs more

Time and capital: Leavers looms are expensive to maintain and operate slowly. Production volume per machine per day is a fraction of what modern knitting equipment produces.

Skilled labour: operating a Leavers loom requires years of training. The craft knowledge is concentrated in a small geographic area and is passed through family and apprenticeship structures.

Limited supply: the number of operating Leavers looms in Calais-Caudry has declined significantly over the past century. The infrastructure that supports them — repair specialists, thread suppliers, Jacquard card makers — is also concentrated and limited.

The result is a material that cannot be industrially replicated without losing the construction quality, and that commands a price reflecting its production economics.

When you encounter a piece of fine lingerie described as using Calais lace, Leavers lace, or French lace, and the price reflects it, the cost is traceable to this specific industrial and craft heritage. The materials guide covers lace construction broadly, and the lace care guide explains how to maintain pieces made with it.