Is boys swim trunks profitable to sell on Amazon United States?

The niche generates $1.2M/yr across 66 tracked products. 9 of 16 products launched in the last 360 days are still selling. 90-day search growth is +36.1%. Flapen's verdict: Launch it (59/100).

How competitive is the boys swim trunks niche?

32 brands and 39 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 56% of demand.

What do buyers complain about in boys swim trunks?

Top complaints mined from reviews: Size-Overall, Waist Fit, Quality-Overall. The return rate is 3.8%.

When does demand for boys swim trunks peak?

Demand peaks in Mar–Apr–May–Jun–Jul; the busiest month runs 9.9× the quietest.

What does it cost to enter the boys swim trunks niche?

Listings span $7.83–$28.96; the average listing price is $18.28 (sweet spot $15–$100). The average incumbent carries 1,284 reviews — the moat a new listing must climb.

boys swim trunks

Launch it

A $1.2M/yr market growing +36.1% this quarter with returns at 3.8% — clears our launch bar.

Competition

Great31%

top-5 click share — an open shelf

Avg price

Great$18.28

avg listing price — sweet spot $15–$100

Market size

Great$1.2M

$1.2M/yr · 4.0M searches

Brand share

Great56%

top-5 brand share — no brand owns this niche

Price range

Good$7.83–$28.96

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+36.1%

90-day search growth — must beat 0% to launch

Review moat

Good1,283.97

avg incumbent reviews — the moat a new listing must climb

Returns

Okay3.8%

return rate — above 5% kills the launch gate

Conversion

Bad1.6%

search→purchase rate — share of searches ending in a sale

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, boys swim trunks is a $1.2M/yr Amazon United States market (4.0M searches/yr). The top 5 brands hold 56% of demand. Demand peaks in Mar–Apr–May–Jun–Jul. Verdict: Launch it — 59/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

boys swim trunks market data

Units sold / yr: 50K–60K; avg 750–1,000/product
Revenue / yr: $914K–$1.1M; units × avg price
Conversion rate: 1.6%
Avg BSR: #33
Page quality: 0%
Prime: 100%
Sponsored: 97%
Out of stock: 1.1%
Avg brand age: 38 months
Avg seller age: 146 days

Competition & brand share

Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.

Brands

32 falling

Sellers

Top-5 brand share

56%

Top 20: 93%

Top-5 click share

31%

Top 20: 63%

Open market

39%

maamgic22%
OlyPegic12%
Todbiccz10%
Amazon Essentials7%
UMELOK6%
LUCOWEE5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +36.1% search growth over the last 90 days.

Peak months: Mar, Apr, May, Jun, Jul · busiest ÷ quietest = 9.9×

Open Trend

Top boys swim trunks search terms

boys swim trunks2.1M/yr +32.1%0.9% conv.
boys swim trunks with compression liner214K/yr +22.7%0.6% conv.
boys bathing suit203K/yr +15.5%0.5% conv.
boy swim trunks150K/yr +34.0%0.8% conv.
boys swim shorts127K/yr +56.1%0.6% conv.
boys swimsuit145K/yr +29.2%0.4% conv.
traje de bao para nios119K/yr +79.2%0.0% conv.
swim trunks boys113K/yr +34.0%0.7% conv.
swimming trunks for boys90K/yr +70.7%0.8% conv.
boys swim99K/yr +7.5%0.3% conv.

All search terms

Top boys swim trunks products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Todbiccz Boys Swim Trunks 3 Pack Quick Dry Bathing Suit UPF 50+ Mesh Lining Beach Shorts for 5-16 Years

Todbiccz$28.164.8★302 rev

OlyPegic Boys Swim Trunks Size 10-12 Boy Swim Shorts Boy Bathing Suit Swimsuit Kids Swimwear Board Shorts with Boxer Brief Liner Compression Toddler Beach Running Swim Trunks (Coconut Tree)

OlyPegic$12.944.8★786 rev

Amazon Essentials Unisex Babies x Sofia Grainge Baby Boys and Toddlers Long Sleeve Rashguard and Shorts Set Ivory Navy Even Stripe 0-3 Months

Amazon Essentials$21.534.7★66 rev

Olreco Boy Swim Trunks Boys 10-12 Swimming Shorts for Boys Bathing Suit with Compression Liner Kids Swim Trunks Boy Swimsuit 10

Olreco$13.564.8★157 rev

maamgic Boys Swim Trunks with Compression Liner Toddler Stretch Swim Shorts Quick Dry Swimming Trunks Boxer Brief 2 in 1 Beach Shorts Rose Coconut 10/12

maamgic$25.984.8★2,162 rev

Newest

by launch date

Amazon Essentials Unisex Babies x Sofia Grainge Baby Boys and Toddlers Long Sleeve Rashguard and Shorts Set Ivory Navy Even Stripe 0-3 Months

Amazon Essentials$21.5366 rev

2mo ago

Boys Swim Trunks Size 10-12 Boys Bathing Suit Ice Cream Swim Shorts Quick Dry Kids Swimsuit Beach Swimwear with Compression Liner

Lattlefnki$12.6156 rev

5mo ago

OlyPegic Boys Swim Trunks Size 10-12 Bathing Suit Boys Swimsuit Swim Shorts Swimwear Quick Dry Swim Trunks with Compression Liner Kids Beach Board Running Shorts Game Console Youth

OlyPegic$12.63120 rev

7mo ago

westwolf Big Boy Swimming Trunks with Compress Kids Yellow Waffle Running Board Shorts Swim Shorts Size 10-12 Years Boys Blue Ice Cream Pool Party

westwolf$24.47188 rev

8mo ago

UMELOK Boys Swim Trunks Swimsuit Boxer Brief 2 in 1 Compression Liner Stretch Swim Shorts Quick Dry Beach Bathing Suit Neon Pineapple 10/12

UMELOK$9.90573 rev

11mo ago

What buyers say about boys swim trunks

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall29%

“Fit as expected”

Quality-Overall15%

“Good Quality and came in 1 day”

Comfort-Overall10%

“So comfortable”

Color7%

“color is vibrant”

Value For Money5%

“Good product for the price”

Material Quality4%

“The material is lightweight”

Lining Quality3%

“My son loves the lining”

Advertised Vs Actual Product2%

“Better than expected”

Quick Drying2%

“Quick dry and somewhat stylish for the price”

Exercise/Sports Suitability2%

“Good for active swimming and play”

What buyers complain about

Size-Overall32%

“pants are too big”

Waist Fit5%

“Crotch to waist is short”

Quality-Overall3%

“Terrible quality”

Thickness3%

“slightly thin”

Material Quality3%

“I am so disappointed in this material”

Color3%

“I wish the colors were a little more vibrant”

Durability2%

“they dont last”

Length2%

“I wish they were a lil longer thats my only complaint”

Shape/Style1%

“wish there were even more style options”

Allergies1%

“My son was getting a rash with other suits that did not have the undershorts”

Top return reasons

Size-Overall70%

Waist Fit10%

Length8%

Hip Fit4%

Advertised Vs Actual Product1%

Color1%

Material Quality1%

Value For Money1%

Thigh Fit1%

Comfort-Overall0%

Common questions

Is boys swim trunks profitable to sell on Amazon United States?: The niche generates $1.2M/yr across 66 tracked products. 9 of 16 products launched in the last 360 days are still selling. 90-day search growth is +36.1%. Flapen's verdict: Launch it (59/100).
How competitive is the boys swim trunks niche?: 32 brands and 39 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 56% of demand.
What do buyers complain about in boys swim trunks?: Top complaints mined from reviews: Size-Overall, Waist Fit, Quality-Overall. The return rate is 3.8%.
When does demand for boys swim trunks peak?: Demand peaks in Mar–Apr–May–Jun–Jul; the busiest month runs 9.9× the quietest.
What does it cost to enter the boys swim trunks niche?: Listings span $7.83–$28.96; the average listing price is $18.28 (sweet spot $15–$100). The average incumbent carries 1,284 reviews — the moat a new listing must climb.