Plus Size Leggings Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

SINOPHANT is the best-performing plus size leggings brand in July 2026, moving 10,000 units across 1 ASIN for 34.5% of Top 10 volume. Bluemaple follows with 6,000 units (20.7%), ahead of Walifrey on 3,000 units (10.3%).

With 9 brands splitting the Top 10 and 65.5% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $5.94 to $7.18, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B09BZKMXT8 booked 1K units at $17.99, with ▲ 42.9% MoM change. On the growth side, B0CDBLC6BQ leads positive momentum with ▲ 300.0% MoM growth on 200 units, with B0CDBHT422 close behind at ▲ 200.0% MoM on 300 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.