baseball underwear
Skip itA small market ($18K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$23.97avg listing price — sweet spot $15–$100
Competition
Great30%top-5 click share — an open shelf
Price range
Good$9.47–$127.65cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.4%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,877.7avg incumbent reviews — the moat a new listing must climb
Growth
Okay+0.1%90-day search growth — must beat 0% to launch
Brand share
Okay90%top-5 brand share — brands hold most of the demand
Conversion
Bad0.9%search→purchase rate — share of searches ending in a sale
Market size
Bad$18K$18K/yr · 86K searches
According to Flapen's Amazon United States niche tracking, baseball underwear is a $18K/yr Amazon United States market (86K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Mar–Apr. Verdict: Skip it — 39/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
baseball underwear market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- $48K–$60K
- units × avg price
- Conversion rate
- 0.9%
- Avg BSR
- #878
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 97%
- Out of stock
- 1.5%
- Avg brand age
- 51 months
- Avg seller age
- 146 days
Competition & brand share
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.Brands
16 rising
Sellers
61
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
30%
Top 20: 67%
Open market
8%
- Shock Doctor43%
- Youper20%
- COOLOMG18%
- Londkaron5%
- Davion4%
- Legendfit2%
- Open — no brand owns it (10 brands, 8%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.1% search growth over the last 90 days.Peak months: Mar, Apr · busiest ÷ quietest = 4.8×
Top baseball underwear search terms
- baseball underwear19K/yr
- shock doctor compression shorts16K/yr
- compression shorts with cup13K/yr
- shock doctor cup underwear youth10K/yr
- cup underwear5K/yr
- mens compression shorts with cup pocket5K/yr
- underwear with cup pocket6K/yr
- mens compression shorts with cup6K/yr
- shock doctor youth cup4K/yr
- shock doctor compression shorts men1K/yr
Top baseball underwear 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Shock Doctor Compression Shorts with Cup Pocket. Athletic Supporter Underwear with Pocket (Cup NOT Included) Black Adult M
Shock Doctor$25.224.4★1,274 rev
COOLOMG Men Compression Shorts with Athletic Cup Sliding Underwear for Baseball Football MMA Lacrosse Field Hockey Black M
COOLOMG$18.984.6★1,285 rev
COOLOMG Athletic Cups Youth Boys Sliding Shorts with Protective Cup Baseball Football MMA Lacrosse Hockey White M
COOLOMG$18.474.6★2,871 rev
Shock Doctor Compression Shorts with Protective Bio-Flex Cup Moisture Wicking Vented Protection Black Adult Medium
Shock Doctor$19.674.4★10,034 rev
Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium White)
Youper$18.344.6★1,646 rev
Newest
by launch date
Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium Black & Camo)
Youper$18.371,646 rev
Shock Doctor Hockey Compression Short with BioFlex Cup Included for Adult Men Black
Shock Doctor$53.9072 rev
COOLOMG Youth Boys Compression Shorts with Cup Pocket NO Cup for Baseball Football Lacrosse White M 2-Pack
COOLOMG$23.9081 rev
COOLOMG Mens Compression Shorts with Cup Pocket Athletic Protective Underwear for Baseball Football MMA Lacrosse Black M
COOLOMG$25.99204 rev
Londkaron 3-Pack Youth Boys Stretch Boxer Briefs w/Soft Protective Cup Elite Boxer Jock for Baseball & Football (Medium White)
Londkaron$21.84992 rev
Trending
90-day click momentum
Youper Youth Elite Boxer Briefs w/Soft Athletic Cup Boys Stretch Boxer Jock for Baseball & Football (White Medium)
Youper$14.854.6★
HEX CompFit Imp Shrt w/ULT Carb Flex Cup Black XL
Shock Doctor$60.804.6★
Londkaron 3-Pack Youth Boys Stretch Boxer Briefs w/Soft Protective Cup Elite Boxer Jock for Baseball & Football (Medium White)
Londkaron$21.844.7★
Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium Black & Camo)
Youper$18.374.6★
Youper 2-Pack Adult Compression Shorts w/Cup Pocket Mens Athletic Supporter for Baseball & Football (Medium Black)
Youper$23.574.6★
What buyers say about baseball underwear
What buyers praise and complain about, mined from review topics.What buyers love
“Comfortable and reliable”
“Fit like they should and comfortable”
“Overall, it is a well-made product,”
“soft material”
“Worth it”
“Performs as advertised”
“PERFECT FOR RUNNERS OR SPORTS”
“Comfy and breathable”
“Seems durable”
“Good and cool”
What buyers complain about
“Too tight”
“Seems super cheap compared to the boxers”
“Do not hold up”
“Overpriced and low quality”
“they are super saggy around the groin area”
“These hold sweat”
“Terribly uncomfortable”
“while wearing them it doesn't feel good like cotton”
“Thick and rough material”
“The cup does not match the pocket well”
Top return reasons
Common questions
- Is baseball underwear profitable to sell on Amazon United States?
- The niche generates $18K/yr across 61 tracked products. 90-day search growth is +0.1%. Flapen's verdict: Skip it (39/100).
- How competitive is the baseball underwear niche?
- 16 brands and 61 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 90% of demand.
- What do buyers complain about in baseball underwear?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 3.4%.
- When does demand for baseball underwear peak?
- Demand peaks in Mar–Apr; the busiest month runs 4.8× the quietest.
- What does it cost to enter the baseball underwear niche?
- Listings span $9.47–$127.65; the average listing price is $23.97 (sweet spot $15–$100). The average incumbent carries 2,878 reviews — the moat a new listing must climb.