Tube Top Bathing Suit Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Trendy Queen is the best-performing tube top bathing suit brand in July 2026, moving 7,000 units across 1 ASIN for 47.9% of Top 10 volume. Holipick follows with 4,400 units (30.1%), ahead of SherryDC on 800 units (5.5%).

With 8 brands splitting the Top 10 and 83.6% 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 $8.99 to $36.99, 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. Specifically, 2 ASINs forced its way in: B0CJQ8QL59 booked 400 units at $32.99, with ▲ 0.0% MoM change. On the growth side, B07Z4SWH4N 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.