Undershirts For Men Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Hanes is the best-performing undershirts for men brand in July 2026, moving 39,000 units across 6 ASINs for 60.0% of Top 10 volume. Fruit of the Loom follows with 22,000 units (33.8%), ahead of Gildan on 4,000 units (6.2%).

With 3 brands splitting the Top 10 and 100.0% 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 $14.48 to $21.98, 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: B07JBRGFH5 booked 4K units at $19.99, with ▼ 20.0% MoM change. On the growth side, B0BG88KVCX leads positive momentum with ▲ 300.0% MoM growth on 2K units, with B06XW4T56N close behind at ▲ 200.0% MoM on 3K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.