swim diaper size 1
Worth a lookShows demand growing +180.6% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+180.6%90-day search growth — must beat 0% to launch
Conversion
Great11.4%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.67avg listing price — sweet spot $15–$100
Price range
Great$6.42–$42.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good40%top-5 click share — leaders hold, buyers still browse
Brand share
Good62%top-5 brand share — brands hold most of the demand
Returns
Good2.2%return rate — above 5% kills the launch gate
Review moat
Okay2,862.6avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$42K$42K/yr · 21K searches
According to Flapen's Amazon United States niche tracking, swim diaper size 1 is a $42K/yr Amazon United States market (21K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 63/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
swim diaper size 1 market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $27K–$35K
- units × avg price
- Conversion rate
- 11.4%
- Avg BSR
- #41
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 98%
- Out of stock
- 9.6%
- Avg brand age
- 46 months
- Avg seller age
- 155 days
Competition & brand share
The top 5 products take 40% of clicks — established leaders, but buyers still shop beyond them.Brands
20 rising
Sellers
51
Top-5 brand share
62%
Top 20: 100%
Top-5 click share
40%
Top 20: 83%
Open market
32%
- ALVA17%
- alpree13%
- upandfast13%
- babygoal11%
- MooMoo Baby8%
- YOUNGER TREE6%
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +180.6% search growth over the last 90 days.Peak months: May, Jun, Jul · busiest ÷ quietest = 11.2×
Top swim diaper size 1 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
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
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
ALVABABY Swim Diapers 2pcs Reusable Baby Girl 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$9.284.6★16,578 rev
AEOCOO Puddle Float Jumper 20-30 Pounds Toddler Swim Vest for 1-2-3 Years Old Pool Floats with Swimming Arm Floaties Swim Jacket with Water Wings for Kids Swimmies Boys Girls Nios Dinosaur
AEOCOO$24.174.3★1,054 rev
Newest
by launch date
Baby Girl Swimsuit Toddler Girl Swimwear with Full Zipper UPF 50+ Sun Protection Long Sleeve Baby Girl One Piece Bathing Suit (Pink Whale 9-12 Months)
upandfast$15.64280 rev
Toddler Floatation Swimsuit Girls One Piece Float Suit with Built-in Floats Cute Ruffle Sleeve Floating Swim Suit UPF 50+ Floatie Bathing Suit Pink Strawberry 1-2 T
FishingDino$30.6445 rev
BIG ELEPHANT Baby Swim Diapers 3-Pack Reusable Waterproof Swim Pants for Boys and Girls Soft Breathable Swimwear for Pool
BIG ELEPHANT$16.5254 rev
BIG ELEPHANT Baby Swim Diapers 3-Pack Reusable Waterproof Swim Pants for Boys and Girls Soft Breathable Swimwear for Pool
BIG ELEPHANT$15.5754 rev
Infant Baby Swimsuit Girl Long Sleeve UPF 50+ Sun Protection One-Piece Rash Guard with Hat Zipper Bathing Suit (Pink Bow 18-24 Months)
YOUNGER TREE$17.90294 rev
Trending
90-day click momentum
ALVABABY Swim Diaper with Matching Top Baby Reusable Toddler Swimsuit Infant Bathing Sleeveless Tankini Swimwear SWT17A
ALVA$8.414.4★
UMELOK Baby Girls Swimwear Sets One Piece Rash Guard Swimsuit with Sun Hat (Pink Tropical jungle 9-12 months)
UMELOK$15.944.6★
BIG ELEPHANT Baby Swim Diapers 3-Pack Reusable Waterproof Swim Pants for Boys and Girls Soft Breathable Swimwear for Pool
BIG ELEPHANT$16.524.4★
Toddler Floatation Swimsuit Girls One Piece Float Suit with Built-in Floats Cute Ruffle Sleeve Floating Swim Suit UPF 50+ Floatie Bathing Suit Pink Strawberry 1-2 T
FishingDino$30.644.8★
BIG ELEPHANT Baby Swim Diapers 3-Pack Reusable Waterproof Swim Pants for Boys and Girls Soft Breathable Swimwear for Pool
BIG ELEPHANT$15.574.4★
What buyers say about swim diaper size 1
What buyers praise and complain about, mined from review topics.What buyers love
“fit securely”
“very well constructed”
“It is water resistant”
“These are comfortable”
“The designs are pretty cute”
“Easy to use”
“theyre adjustable to grow with baby”
“the elastic seems comfortable”
“Definitely worth the price”
“They feel like they are durable”
What buyers complain about
“Doesnt do its job”
“got under water when we first tried it”
“Small”
“Snaps cheap, dont work”
“Maybe the product material has since changed”
“USCG stamp not on it”
“broke out upon first use”
“Dumb zipper placement”
“it didn't even hold him up”
“Deceiving”
Top return reasons
Common questions
- Is swim diaper size 1 profitable to sell on Amazon United States?
- The niche generates $42K/yr across 40 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is +180.6%. Flapen's verdict: Worth a look (63/100).
- How competitive is the swim diaper size 1 niche?
- 20 brands and 51 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 62% of demand.
- What do buyers complain about in swim diaper size 1?
- Top complaints mined from reviews: Functionality-Overall, Water Resistance, Size-Overall. The return rate is 2.2%.
- When does demand for swim diaper size 1 peak?
- Demand peaks in May–Jun–Jul; the busiest month runs 11.2× the quietest.
- What does it cost to enter the swim diaper size 1 niche?
- Listings span $6.42–$42.93; the average listing price is $17.67 (sweet spot $15–$100). The average incumbent carries 2,863 reviews — the moat a new listing must climb.