Scrunch-back leggings use ruched centre-back seaming — the fabric is gathered along the back seam instead of being cut flat. It is a construction detail: the gathering adds texture along the seam line, and the panels either side are cut on a curve rather than sitting square across the back.

Fit matters more than usual here, because the seaming is positioned to land in a specific place. Too large and it sits wrong entirely — measure against the size guide rather than guessing.

Our sizing runs about one size smaller than US sizing — size up if you are between. The size guide shows you how to measure.