Left-hand twill is the mirror image of the more common right hand twill: its diagonal rib runs from the lower right to the upper left of the fabric. The weave structure is otherwise the same, only the direction the weft passes over and under the warp threads is reversed.
Because the weave direction runs against the natural twist direction of most spun cotton yarn, left hand twill denim tends to feel a little softer to the touch than right hand twill of the same weight, and it can develop a slightly different, sometimes described as more textured, fade pattern over time. Some wearers also notice a mild diagonal twist developing in the legs after repeated washing, more so than with right hand twill.
Left hand twill is popular among makers focused on traditional, heavier weight denim, often alongside selvedge construction. See our raw denim guide for how weave choice affects the break in and fading process, and the entry on right-hand twill for a direct comparison.
