Maternity Swimsuit Two Piece Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Eomenie is the best-performing maternity swimsuit two piece brand in July 2026, moving 2,000 units across 2 ASINs for 35.1% of Top 10 volume. Holipick follows with 1,300 units (22.8%), ahead of BDITANLE on 1,000 units (17.5%).

With 7 brands splitting the Top 10 and 75.4% 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 $14.99 to $38.49, 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, 2 ASINs forced its way in: B0GQ958PF4 booked 400 units at $42.29, with ▲ 100.0% MoM change. On the growth side, B0F488KD2L leads positive momentum with ▲ 100.0% MoM growth on 200 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.