onesies for girls
Skip itSoft demand (-72.1% this quarter) — this niche doesn't clear our bar today.
Competition
Incredible9%top-5 click share — an open shelf
Brand share
Great48%top-5 brand share — no brand owns this niche
Avg price
Great£15.45avg listing price — sweet spot $15–$100
Review moat
Good600.59avg incumbent reviews — the moat a new listing must climb
Price range
Good£7.88–£30.69cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.0%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Bad£34K£34K/yr · 383K searches
Conversion
Bad0.6%search→purchase rate — share of searches ending in a sale
Growth
Bad-72.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, onesies for girls is a £34K/yr Amazon United Kingdom market (383K searches/yr). The top 5 brands hold 48% of demand. Verdict: Skip it — 46/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
onesies for girls market data
- Units sold / yr
- 4K–5K
- avg 0–100/product
- Revenue / yr
- £62K–£77K
- units × avg price
- Conversion rate
- 0.6%
- Avg BSR
- #101
- Page quality
- 0%
- Prime
- 81%
- Sponsored
- 84%
- Out of stock
- 18.5%
- Avg brand age
- 45 months
- Avg seller age
- 190 days
Competition & brand share
Clicks spread well past the top 5 (9% combined) — an open shelf where new products get seen.Brands
53 rising
Sellers
40
Top-5 brand share
48%
Top 20: 88%
Top-5 click share
9%
Top 20: 25%
Open market
52%
- KAKU NANU13%
- Ceruwum11%
- Disney8%
- A2Z 4 Kids6%
- Minecraft5%
- Get Trend5%
Demand
Weekly Amazon search volume, last 34 weeks — -72.1% search growth over the last 90 days.Top onesies for girls search terms
- girls onesie42K/yr
- boys onesie40K/yr
- onesies for boys42K/yr
- stitch onesie37K/yr
- onesies for girls34K/yr
- onesie kids13K/yr
- minecraft onesie18K/yr
- kids onesie girls15K/yr
- boys onesie 11-12 years13K/yr
- girls onesie 6-7 years7K/yr
Top onesies for girls 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
Ceruwum Girls Unicorn Sleepsuit Kids Unicorn Onesie Pyjamas (Pink/Blue 7-8 Years)
Ceruwum£16.164.6★735 rev
Todler Ctpy Unisex Children Animal Onesie Pajamas Flannel Halloween Cosplay CostumeHomewearSleepwear
Todler Ctpy£19.714.5★47 rev
ThePyjamaFactory Boys Video Game Controller Fleece Gaming Sleepsuit (11-12 Years) Black
ThePyjamaFactory£10.174.7★40 rev
Minecraft Boys Fleece Onesie Hooded Onesie Pyjamas - Gifts for Gamers (Black Aop 9-10 Years)
Minecraft£18.794.6★5,534 rev
Marvel Spiderman Boys Fleece Onesie 1.5-2 Years Blue
Marvel£11.904.7★1,122 rev
Newest
by launch date
Ceruwum Girls Unicorn Sleepsuit Kids Unicorn Onesie Pyjamas (Cat-Violet Stars 7-8 Years)
Ceruwum£15.31735 rev
KAKU NANU Girls Onesie Kids Rainbow Onesie Fluffy Fleece Jumpsuit Toddler Sleepsuit Gifts for Girls Age 3 4 Years
KAKU NANU£15.0721 rev
KAKU NANU Girls Onesie Kids Rainbow Onesie Fluffy Fleece Jumpsuit Toddler Sleepsuit Gifts for Girls Age 6 7 8 Years
KAKU NANU£14.2921 rev
Get Trend Naruto Onesies for Boys & Teens 7-15 Years Fleece Jumpsuit PJs Hooded Fleece Onesie Pyjamas Anime Gifts for Boys (13-14 Years Black Naruto)
Get Trend£17.1761 rev
Todler Ctpy Unisex Children Animal Onesie Pajamas Flannel Halloween Cosplay CostumeHomewearSleepwear
Todler Ctpy£19.7147 rev
Trending
90-day click momentumCeruwum Girls Unicorn Sleepsuit Kids Unicorn Onesie Pyjamas (Cat-Violet Stars 7-8 Years)
Ceruwum£15.314.6★
KAKU NANU Unicorn Onesies for Girls Kids Fluffy Age 8 9 10 Unicorn Gifts for Girls Pink
KAKU NANU£13.014.5★
Get Trend Naruto Onesies for Boys & Teens 7-15 Years Fleece Jumpsuit PJs Hooded Fleece Onesie Pyjamas Anime Gifts for Boys (13-14 Years Black Naruto)
Get Trend£17.174.6★
KAKU NANU Unicorn Onesies for Girls Kids Fluffy Age 6 7 8 Unicorn Gifts for Girls Pink
KAKU NANU£13.564.5★
KAKU NANU Girls Onesie Kids Rainbow Onesie Fluffy Fleece Jumpsuit Toddler Sleepsuit Gifts for Girls Age 3 4 Years
KAKU NANU£15.074.5★
What buyers say about onesies for girls
What buyers praise and complain about, mined from review topics.What buyers love
“Fits well”
“Decent onesie”
“The hood adds extra warmth”
“Really comfy”
“Lovely and soft”
“Money well spent”
“Gran son loves these well made wash well”
“material good”
“As stated in description”
“good fit and colour”
What buyers complain about
“too big”
“Poor Quality”
“Could have been thicker fabric and warmer”
“Broke after one wear”
“cheap material”
“Zip broke after a day”
“By Boxing Day the seams had all ripped”
“ended up with big holes”
“A little warm”
“it pokes and feels uncomfortable”
Top return reasons
Common questions
- Is onesies for girls profitable to sell on Amazon United Kingdom?
- The niche generates £34K/yr across 290 tracked products. 0 of 45 products launched in the last 360 days are still selling. 90-day search growth is -72.1%. Flapen's verdict: Skip it (46/100).
- How competitive is the onesies for girls niche?
- 53 brands and 40 sellers compete. The top 5 products take 9% of clicks and top 5 brands hold 48% of demand.
- What do buyers complain about in onesies for girls?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Thickness. The return rate is 3.0%.
- What does it cost to enter the onesies for girls niche?
- Listings span £7.88–£30.69; the average listing price is £15.45 (sweet spot $15–$100). The average incumbent carries 601 reviews — the moat a new listing must climb.