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

Pampers is the best-performing toddler training underwear girls brand in July 2026, moving 23,000 units across 3 ASINs for 43.4% of Top 10 volume. Pull-Ups follows with 17,000 units (32.1%), ahead of Ninjamas on 6,000 units (11.3%).

With 5 brands splitting the Top 10 and 86.8% 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 $29.28 to $55.99, 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. On the growth side, B0CRSQBGVY leads positive momentum with ▲ 166.7% MoM growth on 800 units, with B0B6GR7BHY close behind at ▲ 33.3% MoM on 400 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.