Muscle Fit Shirt
Skip itWeak search conversion (0.6%) — this niche doesn't clear our bar today.
Avg price
Great$19.52avg listing price — sweet spot $15–$100
Price range
Great$8.92–$32.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Growth
Good+26.3%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay2,103.22avg incumbent reviews — the moat a new listing must climb
Returns
Bad5.9%return rate — above 5% kills the launch gate
Market size
Bad$45K$45K/yr · 375K searches
Brand share
Bad96%top-5 brand share — brand-locked demand
Conversion
Bad0.6%search→purchase rate — share of searches ending in a sale
Is muscle fit shirt profitable on Amazon?
According to Flapen's Amazon United States niche tracking, muscle fit shirt is a $45K/yr Amazon United States market (375K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Jun. Verdict: Skip it — 39/100.
Data updated Jul 20, 2026 · scored weekly · How we score niches
muscle fit shirt market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 3K–4K
- avg 0–100/product
- Revenue / yr
- $59K–$78K
- units × avg price
- Conversion rate
- 0.6%
- Avg BSR
- #262
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 96%
- Out of stock
- 0.0%
- Avg brand age
- 41 months
- Avg seller age
- 155 days
Competition: brands, sellers & click share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.Brands
9 falling
Sellers
11
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
44%
Top 20: 73%
Open market
2%
- JMIERR87%
- UMIQER4%
- BYLT2%
- TEZO2%
- Real Essentials1%
- Comdecevis1%
- Open — no brand owns it (3 brands, 2%)
muscle fit shirt demand & seasonality
Weekly Amazon search volume, last 54 weeks — +26.3% search growth over the last 90 days.Peak months: Jun · busiest ÷ quietest = 1.9×
Top muscle fit shirt search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- jmierr mens shirts132K/yr
- jmierr59K/yr
- curved hem shirt men23K/yr
- hipster t shirts for men17K/yr
- long tail t-shirts for men19K/yr
- drop cut tshirt men15K/yr
- jmierr shirts12K/yr
- mens hipster t shirts13K/yr
- mens curved hem t shirt12K/yr
- hipster shirts for men23K/yr
Top muscle fit shirt 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
JMIERR Mens 3 Pack Cotton Hipster Hip Hop Longline Crewneck T-Shirt Short Sleeve Gym Workout Athletic T Shirts for Men Pack L Black/Dark Grey/Khaki
JMIERR$27.114.5★5,610 rev
JMIERR Mens 3 Pack Cotton Hipster Hip Hop Longline Crewneck T-Shirt Short Sleeve Gym Workout Athletic T Shirts for Men Pack XL Black/Dark Grey/Khaki
JMIERR$26.914.5★5,610 rev
JMIERR Mens Muscle Slim Fit T-Shirt V Neck Hipster Longline White Henley Shirt Short Sleeve Gym Workout Athletic Fitted Tees Shirts for Men US 43(L)
JMIERR$11.624.5★2,457 rev
JMIERR Mens 3 Pack Cotton Hipster Hip Hop Longline Crewneck T-Shirt Short Sleeve Gym Workout Athletic T Shirts for Men Pack L Black/Light Grey/Army Green
JMIERR$27.364.5★5,610 rev
JMIERR Mens Polo Shirt Short Sleeve Casual Fashion Henley Shirts Button Down Knit Textured Men Gift L Beige
JMIERR$17.274.6★985 rev
Newest
by launch date
JMIERR Mens Muscle T Shirts V Neck Short Sleeves Gym Workout Causal Slim Fit Tee Shirt US38(S) Black
JMIERR$11.3583 rev
JMIERR Henley Shirts for Men Casual Gym Shirts Men Classic Tees US40(M) Black
JMIERR$11.4083 rev
JMIERR Mens Summer Polo Shirt Short Sleeve Casual Fashion Henley Shirts Button Down Knit Textured Men Gift L Duffel Green
JMIERR$13.86177 rev
BYLT Mens Drop-Cut Mens T Shirt Slim Fit Plain Tshirts for Men Drop Cut Basic Crewneck Tee Wrinkle Resistant Stretch Fit Black Medium
BYLT$30.22341 rev
Mens 3 Pack Cotton Hipster Longline T Shirts Curved Hem Plain Hip Hop Short Sleeve Tee Fitted Casual Drop Cuts Crewneck(BKDGKA L)
UMIQER$28.63351 rev
Trending
90-day click momentum
JMIERR Polo Shirts for Men Classic Short Sleeve Black Casual Soft Button Old Money Knit Shirt XL
JMIERR$17.884.6★
BYLT Mens Drop-Cut Mens T Shirt Slim Fit Plain Tshirts for Men Drop Cut Basic Crewneck Tee Wrinkle Resistant Stretch Fit Black Medium
BYLT$30.224.3★
JMIERR Mens Summer Polo Shirt Short Sleeve Casual Fashion Henley Shirts Button Down Knit Textured Men Gift L Duffel Green
JMIERR$13.864.6★
JMIERR Henley Shirts for Men Casual Gym Shirts Men Classic Tees US40(M) Black
JMIERR$11.404.6★
JMIERR Mens Summer Casual Stylish Short Sleeve Button-Down Shirts Cotton Linen Vertical Striped Business Dress Shirts Beach Shirt XL Sky Blue
JMIERR$17.074.1★
What reviews say buyers love and hate about muscle fit shirt
What buyers praise and complain about, mined from review topics.What buyers love
“as it is what it really accurate on how these will fit”
“Best shirt quality”
“Very comfortable”
“material is very nice and soft”
“Good price”
“Soft on the skin”
“Stylish and fit nicely”
“even the black shirts stay true to color”
“It does fit as advertised”
“Good for summer”
What buyers complain about
“They run big”
“Terrible material”
“possible exterior side of the shirt is extremely irritating to the skin”
“I also found it to be short at well”
“Significantly deteriorated underarms after 1 week of use”
“These new ones feel cheap, thin, and lower quality”
“Uncomfortable”
“Too thick”
“The color is off”
“Might be shipping you returned products”
Top return reasons
Common muscle fit shirt questions
- Is muscle fit shirt profitable to sell on Amazon United States?
- The niche generates $45K/yr across 50 tracked products. 2 of 10 products launched in the last 360 days are still selling. 90-day search growth is +26.3%. Flapen's verdict: Skip it (39/100).
- How competitive is the muscle fit shirt niche?
- 9 brands and 11 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in muscle fit shirt?
- Top complaints mined from reviews: Size-Overall, Material Quality, Allergies. The return rate is 5.9% — above our launch gate.
- When does demand for muscle fit shirt peak?
- Demand peaks in Jun; the busiest month runs 1.9× the quietest.
- What does it cost to enter the muscle fit shirt niche?
- Listings span $8.92–$32.81; the average listing price is $19.52 (sweet spot $15–$100). The average incumbent carries 2,103 reviews — the moat a new listing must climb.