Mens Trunk Underwear
Worth a lookShows a sweet-spot price point ($29.99 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$29.99avg listing price — sweet spot $15–$100
Competition
Great21%top-5 click share — an open shelf
Price range
Great$10.19–$59.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Great50%top-5 brand share — no brand owns this niche
Returns
Great2.0%return rate — above 5% kills the launch gate
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Growth
Okay+1.9%90-day search growth — must beat 0% to launch
Market size
Okay$109K$109K/yr · 442K searches
Review moat
Bad10,066.67avg incumbent reviews — the moat a new listing must climb
Conversion
Bad0.8%search→purchase rate — share of searches ending in a sale
Is mens trunk underwear profitable on Amazon?
According to Flapen's Amazon United States niche tracking, mens trunk underwear is a $109K/yr Amazon United States market (442K searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
mens trunk underwear market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 4K–5K
- avg 0–100/product
- Revenue / yr
- $120K–$150K
- units × avg price
- Conversion rate
- 0.8%
- Avg BSR
- #174
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.8%
- Avg brand age
- 46 months
- Avg seller age
- 134 days
Competition: brands, sellers & click share
Clicks spread well past the top 5 (21% combined) — an open shelf where new products get seen.Brands
33 rising
Sellers
97
Top-5 brand share
50%
Top 20: 93%
Top-5 click share
21%
Top 20: 51%
Open market
44%
- BAMBOO COOL16%
- Calvin Klein10%
- wirarpa10%
- DAVID ARCHY7%
- youlehe6%
- Fruit of the Loom6%
mens trunk underwear demand & seasonality
Weekly Amazon search volume, last 104 weeks — +1.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top mens trunk underwear search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- mens trunks underwear204K/yr
- mens trunk underwear53K/yr
- mens underwear trunks68K/yr
- men trunks underwear22K/yr
- boxer trunks for men17K/yr
- mens boxer trunks16K/yr
- trunks underwear8K/yr
- mens underwear trunk8K/yr
- men underwear trunks8K/yr
- trunk underwear7K/yr
Top mens trunk underwear products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Mens Bamboo Underwear 4-Pack - Ultra Soft Anti-Roll Waistband Tagless Trunks
BAMBOO COOL$33.814.1★84 rev
LuxeCore Mens Breathable Boxer Briefs 10 Pack Moisture Wicking Quick-Dry Underwear Comfortable Stretch Waistband Multipack(M) Multicolor
LuxeCore$20.044.2★136 rev
wirarpa Mens Breathable Micro Modal Trunk Underwear Covered Waistband Microfiber Underpants Short Leg Solid Color Large
wirarpa$22.494.4★25,653 rev
Fruit of the Loom Mens 4-Way Stretch Boxer Briefs | Lightweight & Moisture Wicking Underwear | Long Regular Leg & Trunk Trunk - 6 Pack - Assorted Solids Large
Fruit of the Loom$19.664.2★83 rev
SOLY HUX Mens Boxer Briefs 3 Packs Trunks Mid Rise Underwear Stretchy Knitted Panties Green Black Multi Medium
SOLY HUX$20.074.2★233 rev
Newest
by launch date
HOOFESAN Mens Underwear Boxer Briefs Soft Breathable Trunks Underwear No Ride Up Boxer Briefs for Men Multipack
HOOFESAN$20.3229 rev
adidas Mens Microfiber Trunk Briefs (3-Pack) Performance Stretch Moisture-Wicking Underwear
adidas$25.56318 rev
Fruit of the Loom Mens 4-Way Stretch Boxer Briefs | Lightweight & Moisture Wicking Underwear | Long Regular Leg & Trunk Trunk - 6 Pack - Assorted Solids Large
Fruit of the Loom$19.6683 rev
LuxeCore Mens Breathable Boxer Briefs 10 Pack Moisture Wicking Quick-Dry Underwear Comfortable Stretch Waistband Multipack(M) Multicolor
LuxeCore$20.04136 rev
Arjen Kroos Breathable Cotton Underwear for Men 4 Pack Moisture Wicking Anti-Roll Trunks Underpants with Plush Waistband
Arjen Kroos$29.7976 rev
Trending
90-day click momentumArjen Kroos Breathable Cotton Underwear for Men 4 Pack Moisture Wicking Anti-Roll Trunks Underpants with Plush Waistband
Arjen Kroos$29.794.5★
DAVID ARCHY Mens Trunks Underwear Soft Breathable Rayon Made from Bamboo Trunk No Fly Pouch 4-Pack L 2.5
DAVID ARCHY$30.104.3★
HOOFESAN Mens Underwear Boxer Briefs Soft Breathable Trunks Underwear No Ride Up Boxer Briefs for Men Multipack
HOOFESAN$20.324.4★
Mens Bamboo Underwear 4-Pack - Ultra Soft Anti-Roll Waistband Tagless Trunks
BAMBOO COOL$33.814.1★
BAMBOO COOL Mens Trunks Underwear Performance Breathable Mesh Fly Zone Moisture-Wicking(7 Pack)
BAMBOO COOL$54.974.6★
What reviews say buyers love and hate about mens trunk underwear
What buyers praise and complain about, mined from review topics.What buyers love
“Comfortable to wear”
“not too tight”
“Decent Quality”
“They are affordable”
“soft on the skin”
“Very breathable material”
“Breathes well”
“Exactly as pictured”
“colors are nice”
“stretchy fabric”
What buyers complain about
“Too short”
“not well-made”
“Extremely uncomfortable”
“no elasticity”
“Fell apart immediately”
“Very tight in the thigh”
“Material a bit stiff”
“even though the waist wasnt even close to too tight”
“Price is too high”
“Two pair had dime size hole in them”
Top return reasons
Common mens trunk underwear questions
- Is mens trunk underwear profitable to sell on Amazon United States?
- The niche generates $109K/yr across 110 tracked products. 11 of 19 products launched in the last 360 days are still selling. 90-day search growth is +1.9%. Flapen's verdict: Worth a look (56/100).
- How competitive is the mens trunk underwear niche?
- 33 brands and 97 sellers compete. The top 5 products take 21% of clicks and top 5 brands hold 50% of demand.
- What do buyers complain about in mens trunk underwear?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Comfort-Overall. The return rate is 2.0%.
- When does demand for mens trunk underwear peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the mens trunk underwear niche?
- Listings span $10.19–$59.26; the average listing price is $29.99 (sweet spot $15–$100). The average incumbent carries 10,067 reviews — the moat a new listing must climb.