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47

mason jar sleeve

Skip it

A small market ($31K/yr) — this niche doesn't clear our bar today.

Market size 8Growth 55Conversion 14Competition 77Returns 49Price range 73Avg price 79Brand share 44Review moat 80Quality gap 38

Review moat

Great404.44

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$16.61

avg listing price — sweet spot $15–$100

Competition

Great38%

top-5 click share — an open shelf

Price range

Good$9.57–$29.74

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+28.7%

90-day search growth — must beat 0% to launch

Returns

Okay3.1%

return rate — above 5% kills the launch gate

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.2%

search→purchase rate — share of searches ending in a sale

Market size

Bad$31K

$31K/yr · 161K searches

According to Flapen's Amazon United States niche tracking, mason jar sleeve is a $31K/yr Amazon United States market (161K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 47/100.

Data updated Aug 5, 2026 · scored weekly · How we score niches

mason jar sleeve market data

Units sold / yr
2K–3K
avg 0–100/product
Revenue / yr
$33K–$42K
units × avg price
Conversion rate
1.2%
Avg BSR
#558
Page quality
0%
Prime
97%
Sponsored
87%
Out of stock
9.7%
Avg brand age
36 months
Avg seller age
152 days

Competition & brand share

Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.

Brands

13 falling

Sellers

53

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

38%

Top 20: 77%

Open market

13%

  • Beautyflier23%
  • Mason Jar Lifestyle17%
  • minliving16%
  • KJQJLY14%
  • Xumbtvs9%
  • JarJackets8%
  • Open — no brand owns it (7 brands, 13%)

Demand & seasonality

Weekly Amazon search volume, last 100 weeks — +28.7% search growth over the last 90 days.
5K4KPrime Day '25Spike '26DecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top mason jar sleeve search terms

  • mason jar sleeve39K/yr
  • mason jar koozie19K/yr
  • mason jar silicone sleeve25K/yr
  • mason jar sleeves13K/yr
  • silicone sleeve for mason jar13K/yr
  • 32 oz mason jar with handle10K/yr
  • silicone mason jar sleeve11K/yr
  • mason jar koozies9K/yr
  • mason jar sleeve 32 oz7K/yr
  • mason jar sleeve 16oz5K/yr
All search terms

Top mason jar sleeve 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.

0%4%$1K8%$2K12%$4K16%$5K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about mason jar sleeve

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall26%

“Fit great”

Quality-Overall12%

“He was very pleased with the quality of these glasses”

Ease Of Use9%

“It's easy to use”

Temperature Retention7%

“keep it colder”

Color7%

“Colors are cute”

Design-Overall4%

“Super cute design”

Advertised Vs Actual Product4%

“Works as advertised”

Durability4%

“it didnt break”

Grip3%

“They don't slip”

Efficiency3%

“Works great”

What buyers complain about

Size-Overall24%

“just a little big”

Smell15%

“Horrible chemical smell”

Handle Quality6%

“Handle is worthless”

Durability5%

“Its probably going to break”

Ease Of Use4%

“I cant use them”

Advertised Vs Actual Product3%

“Not what I exspected”

Temperature Retention3%

“don't help much for keeping the beverages cold”

Natural Resource Wastage2%

“Waste of time and money”

Weight Heavy2%

“Its heavy”

Leak-Proof2%

“leaks through the material”

Top return reasons

Size-Overall62%
Smell12%
Advertised Vs Actual Product7%
Functionality-Overall3%
Ease Of Use2%
Color2%
Handle Quality2%
Value For Money2%
Material Quality1%
Leak-Proof1%

Common questions

Is mason jar sleeve profitable to sell on Amazon United States?
The niche generates $31K/yr across 39 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is +28.7%. Flapen's verdict: Skip it (47/100).
How competitive is the mason jar sleeve niche?
13 brands and 53 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in mason jar sleeve?
Top complaints mined from reviews: Size-Overall, Smell, Handle Quality. The return rate is 3.1%.
When does demand for mason jar sleeve peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the mason jar sleeve niche?
Listings span $9.57–$29.74; the average listing price is $16.61 (sweet spot $15–$100). The average incumbent carries 404 reviews — the moat a new listing must climb.