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Mailing Bags 12x16

prices mostly outside the sweet spot ($2.67–$8.18) — Mailing Bags 12x16 doesn't clear our bar today.

Flapen Score

39
Skip it
Market size 15Growth 28Conversion 97Competition 37Returns 99Price range 0Avg price 14Brand share 28Review moat 27Quality gap 21
This niche Category average

Is Mailing Bags 12x16 profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Mailing Bags 12x16 is a £62K/yr Amazon United Kingdom market (82K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 39/100.

Mailing Bags 12x16: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved +2.2% over the last 90 days and 14.5% of searches end in a purchase.

£62K

revenue / yr

Units sold / yr13K
Search volume / yr+2.2%82K
Conversion rate14.5%
Avg price£5.21

Who owns the niche?

The top 5 brands hold 88% of demand, so 12% of the market is open.

12%

open market share

Brands · sellers10 · 16
Top-5 product click share63%
Open market12%
Avg brand age50 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.

0/100

page quality · 22 products

Sponsored placement95%
New entrants (1y)5· 4 succeeded
Avg rating4.7★
Avg reviews3,815

Top Mailing Bags 12x16 products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

£0£6K£12K£19K£25K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

10 falling

Sellers

16

Top-5 brand share

88%

Top 20: 100%

Top-5 click share

63%

Top 20: 98%

Open market

8%

  • iSOUL52%
  • Switory12%
  • delka10%
  • Double Dragon9%
  • Straame5%
  • 1ABOVE3%
  • Open — no brand owns it (4 brands, 8%)

Mailing Bags 12x16 demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume82KCVR14.5%Products22Brands10Top 5 Brands88%OOS Rate12.4%Rating4.7★Reviews3,815Avg BSR#13
2K2KSpike '25Prime Day '25Spike '26JanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Oct, Nov · busiest ÷ quietest = 2.2×

Top Mailing Bags 12x16 search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 12x16 mailing bags21K/yr
  • mailing bags 12x1619K/yr
  • 12 x 16 mailing bags14K/yr
  • postage bags 12 x 16 inch11K/yr
  • parcel bags 12x165K/yr
  • medium mailing bags 12x163K/yr
  • mail bags 12 x 164K/yr
  • parcel bags 12 x 16 inch6K/yr

What reviews say buyers love and hate about Mailing Bags 12x16

What buyers mention most, as a share of all reviews.

What buyers love

89% of reviews
Quality-Overall26%

Excellent quality

Size-Overall14%

Good size bag

Strength14%

The material that they are made of feels strong

Value For Money13%

Good Value

Advertised Vs Actual Product10%

everything is true to the product description

What buyers complain about

72% of reviews
Quality-Overall23%

the product quality has deteriorated massively in the latest lot Ive ordered

Size-Overall11%

Not fit for size

Thickness8%

not as thick as others

Color7%

Not pink

Smell5%

I mean they really stink really badly

Mailing Bags 12x16 return rate & reasons

Why buyers send it back, as a share of all return requests.

0.1%

Return rate

76%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
65%
2Color
9%
3Quality-Overall
9%
4Adhesion/Stickiness
4%
5Thin
2%

Common Mailing Bags 12x16 questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Mailing Bags 12x16 39/100 on Amazon United Kingdom — Skip it. The niche generates £62K/yr across 22 tracked products. 4 of 5 products launched in the last 360 days are still selling. Search demand moved +2.2% over the last 90 days.
Search demand for Mailing Bags 12x16 on Amazon United Kingdom peaks in Oct–Nov, where the busiest month runs 2.2× the quietest.