swim diapers size 2
Worth a lookShows demand growing +196.6% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+196.6%90-day search growth — must beat 0% to launch
Conversion
Great11.4%search→purchase rate — share of searches ending in a sale
Returns
Great1.7%return rate — above 5% kills the launch gate
Avg price
Great$15.90avg listing price — sweet spot $15–$100
Market size
Good$580K$580K/yr · 319K searches
Price range
Good$9.28–$24.61cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad7,648avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, swim diapers size 2 is a $580K/yr Amazon United States market (319K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 64/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
swim diapers size 2 market data
- Units sold / yr
- 30K–40K
- avg 1,500–2,000/product
- Revenue / yr
- $477K–$636K
- units × avg price
- Conversion rate
- 11.4%
- Avg BSR
- #283
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 95%
- Out of stock
- 5.6%
- Avg brand age
- 47 months
- Avg seller age
- 151 days
Competition & brand share
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
21
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
52%
Top 20: 98%
Open market
10%
- Esembly34%
- babygoal18%
- ALVA11%
- alpree11%
- Hello Bello9%
- BISENKID8%
- Open — no brand owns it (4 brands, 10%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +196.6% search growth over the last 90 days.Peak months: May, Jun, Jul · busiest ÷ quietest = 15.5×
Top swim diapers size 2 search terms
- swim diapers size 1106K/yr
- swim diapers size 276K/yr
- size 1 swim diapers34K/yr
- size 2 swim diapers17K/yr
- little swimmers size 113K/yr
- baby swim diapers size 19K/yr
- swim diaper size 17K/yr
- little swimmers size 28K/yr
- baby swim diapers size 26K/yr
- disposable swim diapers size 15K/yr
Top swim diapers size 2 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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Verdant Gingham Size 2 (18-35lbs)
Esembly$17.134.8★619 rev
Splashers Swim Diapers Disposable Swim Pants
alpree$15.934.8★161 rev
ALVABABY Swim Diapers 2pcs Reusable Baby Boy Swim Diaper 0-8 Months Adjustable Snap Washable Infant Toddler Swimming Diaper for Pool Beach & Swim Lessons Waterproof PUL Leak-Proof UPF 30+ Small Size
ALVA$9.544.6★16,578 rev
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Penny Dot Size 1 (7-17lbs)
Esembly$17.524.8★619 rev
Babygoal Reusable Baby Girl Swim Diapers 3 Pack - Adjustable Washable for 0-8 Months Infants - Ideal for Swimming Lessons - Flower Design
babygoal$10.324.5★10,021 rev
Newest
by launch date
MomEasier Swim Diapers 3 Pcs Reusable Swimming Diaper for Baby Boys and Girls 2-5T Green
MomEasier$20.4026 rev
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Verdant Gingham Size 2 (18-35lbs)
Esembly$17.13619 rev
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Penny Dot Size 1 (7-17lbs)
Esembly$17.52619 rev
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Forget-me-not Size 2 (18-35lbs)
Esembly$18.33619 rev
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Verdant Gingham Size 1 (7-17lbs)
Esembly$17.52619 rev
Trending
90-day click momentumEsembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Verdant Gingham Size 1 (7-17lbs)
Esembly$17.524.8★
MomEasier Swim Diapers 3 Pcs Reusable Swimming Diaper for Baby Boys and Girls 2-5T Green
MomEasier$20.404.6★
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Penny Dot Size 1 (7-17lbs)
Esembly$17.524.8★
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Verdant Gingham Size 2 (18-35lbs)
Esembly$17.134.8★
Esembly Cloth Diaper Cover - Reusable Swim Diaper Waterproof Breathable - Adjustable Outer Layer Over Absorbent Inner for Blowout Protection - Forget-me-not Size 2 (18-35lbs)
Esembly$18.334.8★
What buyers say about swim diapers size 2
What buyers praise and complain about, mined from review topics.What buyers love
“The size 1 fit perfectly”
“I think they are well made”
“Theyre WAY more absorbent”
“theyre adjustable to grow with baby”
“Perfect for our first swim”
“Easy to use”
“Secure elastic for reliable leak containment”
“the great price I would definitely buy again the package arrived in good condition”
“they were very easy to clean”
“They are super soft”
What buyers complain about
“SIZING IS OFF”
“Smelled like harsh chemicals”
“was soaked and didnt protect it from water, which completely failed to meet its purpose”
“Just a little complex to put on”
“These do NOT work at all”
“the diapers leaked right away”
“all the clothes got wet”
“Only downside is that its not designed for sensitive skin”
“on the more expensive side”
Top return reasons
Common questions
- Is swim diapers size 2 profitable to sell on Amazon United States?
- The niche generates $580K/yr across 22 tracked products. 2 of 9 products launched in the last 360 days are still selling. 90-day search growth is +196.6%. Flapen's verdict: Worth a look (64/100).
- How competitive is the swim diapers size 2 niche?
- 10 brands and 21 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in swim diapers size 2?
- Top complaints mined from reviews: Size-Overall, Smell, Water Resistance. The return rate is 1.7%.
- When does demand for swim diapers size 2 peak?
- Demand peaks in May–Jun–Jul; the busiest month runs 15.5× the quietest.
- What does it cost to enter the swim diapers size 2 niche?
- Listings span $9.28–$24.61; the average listing price is $15.90 (sweet spot $15–$100). The average incumbent carries 7,648 reviews — the moat a new listing must climb.