Under Armour Hat Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Under Armour is the best-performing under armour hat brand in July 2026, moving 5,800 units across 4 ASINs for 27.1% of Top 10 volume. Flexfit follows with 5,000 units (23.4%), ahead of FURTALK on 4,000 units (18.7%).

With 7 brands splitting the Top 10 and 69.2% 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 $13.71 to $21.64, 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, 3 ASINs forced its way in: B09XCV2FP4 booked 1K units at $18.00.

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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.