6 year old birthday shirt
Skip itA small market ($57K/yr) — this niche doesn't clear our bar today.
Avg price
Great$15.88avg listing price — sweet spot $15–$100
Review moat
Good587.07avg incumbent reviews — the moat a new listing must climb
Competition
Good45%top-5 click share — leaders hold, buyers still browse
Price range
Good$7.05–$29.70cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good69%top-5 brand share — brands hold most of the demand
Returns
Bad5.3%return rate — above 5% kills the launch gate
Conversion
Bad1.8%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-15.1%90-day search growth — must beat 0% to launch
Market size
Bad$57K$57K/yr · 206K searches
According to Flapen's Amazon United States niche tracking, 6 year old birthday shirt is a $57K/yr Amazon United States market (206K searches/yr). The top 5 brands hold 69% of demand. Verdict: Skip it — 38/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
6 year old birthday shirt market data
- Units sold / yr
- 5K–6K
- avg 0–100/product
- Revenue / yr
- $79K–$95K
- units × avg price
- Conversion rate
- 1.8%
- Avg BSR
- #201
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 1.7%
- Avg brand age
- 26 months
- Avg seller age
- 188 days
Competition & brand share
The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.Brands
21 falling
Sellers
27
Top-5 brand share
69%
Top 20: 99%
Top-5 click share
45%
Top 20: 78%
Open market
27%
- Unordinary Toddler42%
- GLIGLITTR8%
- CPEI7%
- BOUTIKOME6%
- MULOIUDZ6%
- Tutu and Sian5%
Demand
Weekly Amazon search volume, last 16 weeks — -15.1% search growth over the last 90 days.Top 6 year old birthday shirt search terms
- 6th birthday shirt20K/yr
- 6 year old birthday shirt21K/yr
- 6 year old girl birthday outfit15K/yr
- birthday outfit for 6 year old girl10K/yr
- birthday shirt 68K/yr
- six shirt13K/yr
- six birthday shirt5K/yr
- 6th birthday outfit for girls8K/yr
- 6 year old birthday outfit girl9K/yr
- 6 shirt38K/yr
Top 6 year old birthday shirt 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
Unordinary Toddler Boys 6th Birthday Shirt (Charcoal Blue 7 Years)
Unordinary Toddler$12.764.8★1,813 rev
Unicorn 6th Birthday Shirts for Toddler Girls Outfit 6 Year Old Six Sixth Shirt (US Age 7 Years Mauve)
Unordinary Toddler$12.914.7★371 rev
GLIGLITTR Birthday Girl Shirt 6th 7th 8th 9th Girls Birthday Tshirt Kids Bday Party Outfit Sequin Glitter Embroidery Tee Tops(Pink 6Y)
GLIGLITTR$17.234.8★134 rev
CPEI 6th Birthday Outfit for Girls 6 Year Old Six Sixth Shirt Skirt Birthday Outfit (Pink 6 Years)
CPEI$18.224.7★43 rev
Tutu and Sian Unicorn Birthday Outfit for Girls - Shirt Tutu Skirt Dress Birthday Girl Crown Hair Bow & Satin Sash (Unicorn 6Y 6 Years)
Tutu and Sian$28.554.8★542 rev
Newest
by launch date
Birthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 7 Years French Blue - 6th)
Unordinary Toddler$13.0343 rev
Birthday boy Shirt Toddler Boys Outfit First Happy 12m 2t 3t 4 Year Old 5 Kids 6th Number Printed T-Shirt (US Age 7 Years Charcoal Black - 6th)
Unordinary Toddler$14.0539 rev
MULOIUDZ Six Birthday Girl Shirts 6th Girls Birthday Outfits Kid Bow B-Day T-Shirt 6 Years Old Party Tees Gift Tops(Pink 6th)
MULOIUDZ$14.8935 rev
MULOIUDZ Bow Birthday Girl Shirts Kid Toddler Girls B-Day T-Shirt Birthday Outfits Gifts Party Tees Short Sleeve Tops 1-8Y(Pink 6-7Y)
MULOIUDZ$14.8938 rev
Mermaid 6th Birthday Shirts for Girls Happy Birthday Cotton T Shirt Short Sleeve Animals Purple Tee T-Shirt Party Clothes Top 6 Years
Lovekider$12.62172 rev
Trending
90-day click momentumBirthday boy Shirt Toddler Construction Shirts Boys 2t 3t 4 Year Old Excavator Theme Party t-Shirt 5 Kids 6th Outdoor Play (US Age 7 Years French Blue - 6th)
Unordinary Toddler$13.034.9★
Birthday boy Shirt Toddler Boys Outfit First Happy 12m 2t 3t 4 Year Old 5 Kids 6th Number Printed T-Shirt (US Age 7 Years Charcoal Black - 6th)
Unordinary Toddler$14.054.8★
MULOIUDZ Bow Birthday Girl Shirts Kid Toddler Girls B-Day T-Shirt Birthday Outfits Gifts Party Tees Short Sleeve Tops 1-8Y(Pink 6-7Y)
MULOIUDZ$14.894.9★
MULOIUDZ Six Birthday Girl Shirts 6th Girls Birthday Outfits Kid Bow B-Day T-Shirt 6 Years Old Party Tees Gift Tops(Pink 6th)
MULOIUDZ$14.894.7★
Unicorn 6th Birthday Shirts for Toddler Girls Outfit 6 Year Old Six Sixth Shirt (US Age 6 Years Pink)
Unordinary Toddler$15.034.7★
What buyers say about 6 year old birthday shirt
What buyers praise and complain about, mined from review topics.What buyers love
“Fits great”
“Great quality”
“The material is soft and comfortable, which is really important because she had it on for hours and never complained”
“Exactly as advertised”
“The color is so cute”
“is very comfortable”
“Amazing and durable”
“Accurate sizing no shrinkage”
“a good price”
“should hold up to many washings”
What buyers complain about
“Cheaply made and poor quality”
“Runs Too Big”
“Runs big and decal doesnt stay on long”
“Its ok. Cheapy material”
“Would have been good if there werent holes”
“wish it was a little longer”
“Very thin”
“The price was a little high so I was hesitant”
Top return reasons
Common questions
- Is 6 year old birthday shirt profitable to sell on Amazon United States?
- The niche generates $57K/yr across 41 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -15.1%. Flapen's verdict: Skip it (38/100).
- How competitive is the 6 year old birthday shirt niche?
- 21 brands and 27 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in 6 year old birthday shirt?
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 5.3% — above our launch gate.
- What does it cost to enter the 6 year old birthday shirt niche?
- Listings span $7.05–$29.70; the average listing price is $15.88 (sweet spot $15–$100). The average incumbent carries 587 reviews — the moat a new listing must climb.