A variety of the ‘pinstripe’ often found in shirt cloth but rarely in suit cloth is the ‘pencil stripe.’ Just like the pinstripe, the pencil stripe is created by adding warps into a plain weave, but more than one warp yarn is required to create the effect of a carpenter’s ‘pencil mark’.
Chalk stripes, unlike the previous ones, are woven as part of the warp of the weave, not separately, which makes these stripes appear somewhat blurry. This blurriness, which is said to resemble a tailor’s chalk line, gives this type of stripe its name. The spacing on chalk stripes can vary, but usually, the narrower the spacing, the more formal the fabric will appear.
Traditionally, the chalk stripe would have been an off-white stripe, made of up to five threads, on darker backgrounds. Today, any variation of same-weave stripe is considered a chalk stripe: often on flannel, sometimes on worsted suiting, but never on shirts.