sinkers
Worth a lookShows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Growth
Incredible+111.8%90-day search growth — must beat 0% to launch
Conversion
Great10.4%search→purchase rate — share of searches ending in a sale
Review moat
Good814.79avg incumbent reviews — the moat a new listing must climb
Brand share
Good69%top-5 brand share — brands hold most of the demand
Competition
Good55%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Avg price
Bad£8.08avg listing price — sweet spot $15–$100
Market size
Bad£83K£83K/yr · 99K searches
Price range
Bad£4.43–£13.93cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, sinkers is a £83K/yr Amazon United Kingdom market (99K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 59/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
sinkers market data
- Units sold / yr
- 8K–10K
- avg 250–500/product
- Revenue / yr
- £65K–£81K
- units × avg price
- Conversion rate
- 10.4%
- Avg BSR
- #38
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 3.9%
- Avg brand age
- 26 months
- Avg seller age
- 185 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
18 rising
Sellers
54
Top-5 brand share
69%
Top 20: 100%
Top-5 click share
55%
Top 20: 92%
Open market
25%
- DTYDECLE21%
- Zoggs19%
- Intex13%
- Xndryan9%
- Mactoou6%
- yayafunfun6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +111.8% search growth over the last 90 days.Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 4.8×
Top sinkers search terms
- pool sinkers for kids16K/yr
- sinkies19K/yr
- pool sinkers13K/yr
- sinkers for swimming kids17K/yr
- zoggs pool toys8K/yr
- sinkers9K/yr
- swimming sinkers for kids8K/yr
- swimming sinkers5K/yr
- swimming weights for kids3K/yr
- sinkers for swimming pool902/yr
Top sinkers 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
DTYDECLE 18pcs Diving Pool Toys Swimming Pool Toys Set with Diving Rings Diving Torpedo Diving Seagrass Marine gem Underwater Training Diving Game Toys for Kids Summer Swimming Pool Party
DTYDECLE£7.704.6★644 rev
Intex Underwater Play Sticks 5 Pack Sinking Pool Diving Toy Set Multicolour Swimming Dive Sticks for Kids Ages 6+
Intex£4.434.6★5,600 rev
Zoggs Dive Sticks Kids Swimming Pool Toys Brightly-Coloured Sinkies Diving Toys for Swimming Pool Games Confidence Building Sinkers Age 3 & Up Blue/Lime/Orange 3-Pack
Zoggs£9.674.7★2,101 rev
Xndryan Diving Pool Toys Sinkies for Kids Swimming Underwater Diving Toys Set Includes 5 Pcs Diving Sticks 4 Pcs Torpedo Bandits 4 Pcs Diving Rings Fun Swimming Toys for Pool
Xndryan£10.044.6★949 rev
Mactoou Dive Sticks 24 Pcs Diving Pool Toys Sinkers with Storage Bag Summer Swimming Toys with Diving Mermaids Dive Sticks Diving Rings Diving Seagrass Torpedo Bandits for Kids
Mactoou£9.984.6★202 rev
Newest
by launch date
KSVFTB 10Pcs/Set Swimming Pool Toys Professional Pool Sinkers Dive Sticks for Aquatic Activities Set Includes 4 Pcs Dive Rings and 6Pcs Sinkies Ideal for Recreational Pool Use
KSVFTB£9.460 rev
zeeloopbee Dive Sticks Swimming Pool Toys for Kids Toddlers 3Pcs Duck Diving Sticks for Training Confidence Building Underwater Fun Sinkies for kids Swimming Dive Pool Toys Games for Kids 7-12
zeeloopbee£8.94148 rev
Vinitoy Diving Toys for Swimming Pool 24 PCS Sinkers for Swimming Kids Underwater Training Toys Diving Mermaids Dive Sticks Torpedo Bandits Dive Seagrass Diving Rings with Carrying Bag for Kids
Vinitoy£10.05267 rev
4Pcs Mermaid Diving Toys for Swimming Pool - Sinking Sinkers for Kids 7-12 Underwater Training Toys for Girls Boys Pool Games
yayafunfun£5.97134 rev
4Pcs Torpedo Diving Toys for Swimming Pool Sinking Toys Swimming Sinkers for Kids Dive Torpedo Swim Pool Sinkers Bath Torpedo Water Toy Underwater Training Pool Toys for Kids 7-12 Girls Boys Pool Game
yayafunfun£5.45134 rev
Trending
90-day click momentumKSVFTB 10Pcs/Set Swimming Pool Toys Professional Pool Sinkers Dive Sticks for Aquatic Activities Set Includes 4 Pcs Dive Rings and 6Pcs Sinkies Ideal for Recreational Pool Use
KSVFTB£9.460.0★
Zoggs Kids Little Squirts Toys (Pack of 3) - Multi-Colour
Zoggs£8.154.5★
HTHL 4 Pack Set Pool Toys Diving Torpedo Shark Shape Gliding Torpedo For Kids Underwater Toys Summer Fun Swimming Toys For Bath Pool Water Park and Sea
OWUDE£4.654.4★
Skillmatics Seek & Splash Pool Dive Toys for Kids Search & Find Game
Skillmatics£13.934.5★
JOYIN Dive Rings - 8 Pcs Colorful Swimming Rings for Kids - Pool Diving Training Toys
JOYIN£7.344.3★
What buyers say about sinkers
What buyers praise and complain about, mined from review topics.What buyers love
“Fun game”
“Excellent and versatile product”
“Great value”
“easy to spot in the water, and sink well which makes them perfect for diving practice”
“As described”
“Durable and well made”
“The rings are very lightweight”
“the colours really stand out”
“easy to use”
“surprise gift for our holiday”
What buyers complain about
“The set is very cheap”
“At £17.99, I do think it's priced a touch high - maybe a couple of pounds more than I'd expect -”
“Small”
“the rings broke pretty quickly”
“is not useful at all for swimming items as it holds water inside”
“also they are cheaply made”
Top return reasons
Common questions
- Is sinkers profitable to sell on Amazon United Kingdom?
- The niche generates £83K/yr across 28 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +111.8%. Flapen's verdict: Worth a look (59/100).
- How competitive is the sinkers niche?
- 18 brands and 54 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in sinkers?
- Top complaints mined from reviews: Quality-Overall, Value For Money, Size-Overall. The return rate is 0.4%.
- When does demand for sinkers peak?
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 4.8× the quietest.
- What does it cost to enter the sinkers niche?
- Listings span £4.43–£13.93; the average listing price is £8.08 (sweet spot $15–$100). The average incumbent carries 815 reviews — the moat a new listing must climb.