Gym Shirts Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Hanes is the best-performing gym shirts brand in July 2026, moving 10,000 units across 1 ASIN for 21.7% of Top 10 volume. Gildan follows with 9,000 units (19.6%), ahead of Dalavch on 7,000 units (15.2%).

Volume is spread across 8 brands, with the top three holding 56.5% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $13.99 to $28.43, 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: B09DCB77Z4 booked 3K units at $17.09, with ▲ 50.0% MoM change. On the growth side, B0CSWHJ9BS leads positive momentum with ▲ 150.0% MoM growth on 2K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.