Waterproof Backpack Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

JanSport is the best-performing waterproof backpack brand in July 2026, moving 40,000 units across 2 ASINs for 35.7% of Top 10 volume. ZORFIN follows with 10,000 units (8.9%), ahead of MATEIN on 10,000 units (8.9%).

Volume is spread across 9 brands, with the top three holding 53.6% 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 $16.99 to $46.75, 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: B0007QCQGI booked 30K units at $39.41, with ▲ 650.0% MoM change.

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changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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