Potty Training Underwear For Girls Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Pampers is the best-performing potty training underwear for girls brand in July 2026, moving 36,000 units across 5 ASINs for 60.0% of Top 10 volume. GoodNites follows with 11,000 units (18.3%), ahead of Pull-Ups on 10,000 units (16.7%).

With 4 brands splitting the Top 10 and 95.0% 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 $29.99 to $41.20, 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: B078SXLCY3 booked 3K units at $8.94, with ▲ 50.0% MoM change. On the growth side, B0GP9KJPK2 leads positive momentum with ▲ 200.0% MoM growth on 300 units, with B084DT3TZL close behind at ▲ 125.0% MoM on 900 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.