Mens Swim Trunks 5 Inch Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Mens Swim Trunks 5 Inch sales on Amazon US totaled 23,300 units in July 2026 (▼ 8.1% vs. the prior month), generating an estimated $518,616 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 57.9% of unit volume and 58.2% of revenue, while a typical listing is priced at $19.75. The keyword itself pulled 11,115 Amazon queries over the same period (▼ 49.6% MoM).
Zooming out to the 12-month window ending July 2026, the mens swim trunks 5 inch Top 50 moved 114,900 units and $2,638,427 in cumulative sales — an average of 9,575 units and $219,869 per month. Monthly throughput topped out at 25,350 units in June 2026 and dipped to 3,350 in October 2025, leaving the latest reading 130.7% higher than August 2025.
Mens Swim Trunks 5 Inch Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
23.3K
▼ 8.1% MoM
Monthly Revenue 2026/07
$518.6K
▼ 13.4% MoM
Top 10 Market Share 2026/07
57.9%
Mens Swim Trunks 5 Inch Market Share & Sales Concentration on Amazon US — July 2026
The most-sold mens swim trunks 5 inch listing on Amazon US in July 2026 is ASIN B085C2KTNG (Brand: FT FENTENG), which sold 3,000 units at $19.99 apiece — equal to 12.9% of every unit tracked in this report and 1.5× the volume of the No. 2 listing.
The Top 10 ASINs account for 13,500 units and $301,598 in July 2026 — 57.9% of unit volume and 58.2% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Mens Swim Trunks 5 Inch' on Amazon
July 2026
Is 57.9% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B085C2KTNG
FT FENTENG Mens Swim Trunks Quick Dry Board Shorts with Mesh Liner, Breathable Big & Tall Beach Shorts Swimwear Bathing Suits
3K
▲ 0.0%vs. prior month
$59.9K
latest month
12-month trend
B0BLNQ3C8Y
maamgic Mens Swim Trunks with Compression Liner 5 Inch Quick Dry for Beach
2K
▲ 0.0%vs. prior month
$54.8K
latest month
12-month trend
B0BLNQPVMV
maamgic Mens Swim Trunks with Compression Liner 5 Inch Quick Dry for Beach
2K
▼ 33.3%vs. prior month
$61.1K
latest month
12-month trend
B0861QWJ18
maamgic Mens Swim Trunks 5 Inch with Mesh Liner Breathable for Beach
1K
▲ 0.0%vs. prior month
$18K
latest month
12-month trend
B07CPPY54X
SILKWORLD Men's Swim Trunks Quick Dry Beach Shorts with Pockets
1K
▲ 0.0%vs. prior month
$18.5K
latest month
12-month trend
B0BLN62LX2
maamgic 2 in 1 Mens Swim Trunks 7 Inch Swim Shorts Swim Suits Board Shorts
1K
▼ 50.0%vs. prior month
$32.2K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Mens Swim Trunks 5 Inch Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
maamgic is the best-performing mens swim trunks 5 inch brand in July 2026, moving 6,000 units across 4 ASINs for 44.4% of Top 10 volume. FT FENTENG follows with 3,000 units (22.2%), ahead of SILKWORLD on 1,000 units (7.4%).
With 7 brands splitting the Top 10 and 74.1% 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 $14.99 to $25.96, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
maamgic
4 ASINs in Top 10
44.4%
Units
6K
Revenue
$166.2K
Avg. price
$25.96
B0BLNQ3C8Y
$28.39·★4.6·5.3K revsmaamgic Mens Swim Trunks with Compression Liner 5 Inch Quick Dry for Beach
Units sold2KB0BLNQPVMV
$28.39·★4.6·5.3K revsmaamgic Mens Swim Trunks with Compression Liner 5 Inch Quick Dry for Beach
Units sold2KB0861QWJ18
$17.09·★4.6·8.5K revsmaamgic Mens Swim Trunks 5 Inch with Mesh Liner Breathable for Beach
Units sold1KB0BLN62LX2
$29.99·★4.6·4.8K revsmaamgic 2 in 1 Mens Swim Trunks 7 Inch Swim Shorts Swim Suits Board Shorts
Units sold1K
FT FENTENG
1 ASIN in Top 10
22.2%
Units
3K
Revenue
$59.9K
Avg. price
$19.99
B085C2KTNG
$19.99·★4.5·6.7K revsFT FENTENG Mens Swim Trunks Quick Dry Board Shorts with Mesh Liner, Breathable Big & Tall Beach Shorts Swimwear Bathing Suits
Units sold3K
SILKWORLD
1 ASIN in Top 10
7.4%
Units
1K
Revenue
$18.5K
Avg. price
$14.99
B07CPPY54X
$14.99·★4.5·18.2K revsSILKWORLD Men's Swim Trunks Quick Dry Beach Shorts with Pockets
Units sold1K
Trending Mens Swim Trunks 5 Inch Products — Growth Leaders & New Top 10 Entrants
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: B0GQ4ZWP3C booked 1K units at $22.99, with ▲ 150.0% 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.
B0GQ4ZWP3C
Sixfish Mens Swim Trunks with Compression Liner 5 Inch,2-in-1 Bathing Suit
Price
$22.99
Rating
4.5
Reviews
207
Latest month sales
B0DTKFGBBD
Men's Swim Shorts Seersucker Swimming Trunks for Men Beach Shorts Quick Dry Bathing Suit 5"/7"/9" with Pockets
Price
$9.49
Rating
4.5
Reviews
366
Latest month sales
B082N1519H
Tyhengta Men's Swim Trunks Quick Dry Beach Shorts with Zipper Pockets and Mesh Lining
Unlock to view ASIN details and product titles
Price
$21.99
Rating
4.5
Reviews
14.2K
Latest month sales
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