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Inner Sleeves

Inner Sleeves shows low returns (0.4%), but a small market ($81K/yr) keeps it on the watch list.

Flapen Score

51
Worth a look

Top 19% of 2,084 Spielzeug niches · +8 vs the category median of 43

Market size 20Growth 30Conversion 95Competition 51Returns 98Price range 76Avg price 49Brand share 54Review moat 38Quality gap 24
This niche Category average · 2,084 niches

Is Inner Sleeves profitable on Amazon?

According to Flapen's Amazon Germany niche tracking, Inner Sleeves is a €81K/yr Amazon Germany market (54K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Jun. Verdict: Worth a look — 51/100.

Inner Sleeves: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved +4.0% over the last 90 days and 12.6% of searches end in a purchase.

€81K

revenue / yr

Units sold / yr8K
Search volume / yr+4.0%54K
Conversion rate12.6%
Avg price€11.83

Who owns the niche?

The top 5 brands hold 73% of demand, so 27% of the market is open.

27%

open market share

Brands · sellers14 · 101
Top-5 product click share54%
Open market27%
Avg brand age49 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.6★ — the gap to enter on.

0/100

page quality · 28 products

Sponsored placement64%
New entrants (1y)1· 1 succeeded
Avg rating4.6★
Avg reviews2,660

Top Inner Sleeves 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 54% of clicks — established leaders, but buyers still shop beyond them.

€0€4K€8K€12K€16K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

14 rising

Sellers

101

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

54%

Top 20: 91%

Open market

19%

  • Mlikero21%
  • Dragon Shield21%
  • KMC11%
  • Ultimate Guard10%
  • Vault X10%
  • HEART FOR CARDS9%

Inner Sleeves demand & seasonality

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

Volume54KCVR12.6%Products28Brands14Top 5 Brands73%OOS Rate4.3%Rating4.6★Reviews2,660Avg BSR#106
2K1KSpike '25Prime Day '25Black Friday '25Spike '26JanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jun · busiest ÷ quietest = 1.5×

Top Inner Sleeves search terms shoppers use

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

  • perfect fit sleeves14K/yr
  • inner sleeves13K/yr
  • pokemon sleeves perfect fit5K/yr
  • dragon shield inner sleeves6K/yr
  • inner sleeves mtg5K/yr
  • dragon shield perfect fit5K/yr
  • mtg inner sleeves4K/yr
  • perfect fit sleeves pokemon4K/yr

What reviews say buyers love and hate about Inner Sleeves

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

What buyers love

96% of reviews
Gesamtgröße33%

Die sind wirklich perfect fit

Qualität insgesamt25%

Super Produkt

Preis-Leistungs-Verhältnis16%

Super Preis

beworben Vs Tatsächliches Produkt7%

Hält, was es verspricht

Fall/Aufprallschutz6%

Optimaler Schutz für die meisten Karten

What buyers complain about

89% of reviews
Gesamtgröße56%

Kein Perfect Fit

Qualität insgesamt9%

Unterschiedliche Qualität

Preis-Leistungs-Verhältnis5%

Schade um das Geld

Dicke5%

Sleeves sind dünn

Falten3%

Die Sleeves sind bereits sehr wellig und zerknittert

Inner Sleeves return rate & reasons

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

0.4%

Return rate

0%

Fixable by listing

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

1Gesamtgröße
68%
2Dünn
11%
3Qualität insgesamt
6%
4Defekt Material/Teile
2%
5beworben Vs Tatsächliches Produkt
2%

Common Inner Sleeves questions

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

Flapen scores Inner Sleeves 51/100 on Amazon Germany — Worth a look. The niche generates €81K/yr across 28 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved +4.0% over the last 90 days.
Search demand for Inner Sleeves on Amazon Germany peaks in Jun, where the busiest month runs 1.5× the quietest.