---
title: "40 X 30 X 20 Cm Bag — £231K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/fashion/40-x-30-x-20-cm-bag"
last_updated: "2026-07-31T07:23:38.458Z"
locale: en
meta:
description: "Niche score 57/100 · £231K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · £231K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "40 X 30 X 20 Cm Bag — £231K/yr Amazon UK Niche (2026) - Flapen"
---
# **40 x 30 x 20 cm bag**
**Worth a look**
Shows no brand lock-in (top 5 brands take 49% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 44Growth 35Conversion 36Competition 84Returns 73Price range 72Avg price 79Brand share 86Review moat 36Quality gap 32
**Brand share**
**Great****49%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****31%**
top-5 click share — an open shelf
**Avg price**
**Great****£16.67**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Price range**
**Good****£8.41–£32.27**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****£231K**
£231K/yr · 482K searches
**Conversion**
**Okay****2.9%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****2,928.98**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+8.1%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, 40 x 30 x 20 cm bag is a £231K/yr Amazon United Kingdom market (482K searches/yr). The top 5 brands hold 49% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **40 x 30 x 20 cm bag market data**
- **Units sold / yr**
- **13K–15K**
- avg 250–500/product
- **Revenue / yr**
- **£208K–£250K**
- units × avg price
- **Conversion rate**
- **2.9%**
- **Avg BSR**
- **#43**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **85%**
- **Out of stock**
- **2.7%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.
**Brands**
**25 **▼falling
**Sellers**
**31**
**Top-5 brand share**
**49%**
Top 20: 98%
**Top-5 click share**
**31%**
Top 20: 71%
**Open market**
**44%**
- MATEIN16% - Lossga9% - ETRONIK8% - Taygeer8% - KLOSTAIN8% - Narwey7%
## **Demand**
Weekly Amazon search volume, last 43 weeks — +8.1% search growth over the last 90 days.
13K8KSpike '25Spike '26Sep '25Nov '25Jan '26Feb '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/uk/fashion/40-x-30-x-20-cm-bag/trend)
## **Top 40 x 30 x 20 cm bag search terms**
- **ryan air bag 40x30x20**127K/yr+0.2%3.4% conv. - **underseat cabin bag 40x30x20**36K/yr+79.0%1.6% conv. - **40x30x20 backpack**36K/yr+38.1%2.1% conv. - **40 x 30 x 20 cabin bag**23K/yr+28.3%1.2% conv. - **cabin max 40x30x20**29K/yr+1.0%1.0% conv. - **backpack 40x30x20**32K/yr+7.3%1.7% conv. - **ryan air cabin bag 40x30x20**21K/yr+17.8%2.9% conv. - **cabin bags 40x30x20**27K/yr-15.3%1.3% conv. - **ryanair underseat bag 40x30x20**18K/yr-10.7%2.1% conv. - **carry on bag 40x30x20**18K/yr+13.0%1.8% conv. [**All search terms **](https://flapen.com/research/uk/fashion/40-x-30-x-20-cm-bag/search-terms)
## **Top 40 x 30 x 20 cm bag 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%2%£5K4%£9K6%£14K8%£19K101001K10K100K Reviews — right = deep review moatMarket 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.
### **Top sellers**
by 90-day click share
[1**Taygeer for New Ryanair Cabin Bags 40x30x20 Underseat Travel Backpack Cabin Size Rucksack for Plane Hand Luggage Backpack for Travelling Ryan Air Cabin Bag 40x30x20 with Separate Shoe Pouch Black**Taygeer**£15.70**4.6★10,647 rev](https://www.amazon.co.uk/dp/B0DHXLWJFG) [2**MATEIN for New Ryanair Cabin Bags 40x30x20 Underseat 24L TSA Travel Backpack Cabin Size with Wet Pocket Ryan Air Bag 40x30x20 Carry On Backpack for Women Fits 15.6 Inch Laptop Peacock Green**MATEIN**£14.94**4.7★217 rev](https://www.amazon.co.uk/dp/B0GJJL15C5) [3**KLOSTAIN Ryanair Cabin Bags 40x30x20 Underseat 24L Laptop Hand Luggage Carry-On Bag Travel Backpack Fits easyJet Eurowings Wizz Air Black**KLOSTAIN**£20.82**4.6★7,591 rev](https://www.amazon.co.uk/dp/B0FGY2XB5F) [4**MATEIN for New Expandable Ryanair Cabin Bags 40x30x20 Underseat Travel Rucksack Cabin Size Ryan Air Bag 40x30x20 Under Seat Flight Backpack Casual Daypacks Hand Luggage Backpack for Travel Black**MATEIN**£14.14**4.7★1,572 rev](https://www.amazon.co.uk/dp/B0F66HWX4Y) [5**WENIG Ryanair Cabin Bags 40x30x20 Underseat 24L Small Travel Backpack Cabin Size Rucksack for Plane Hand Luggage Backpack Flight Bag Ryan Air Cabin Bag Fit 14 Inch Laptop with USB Charging Port-Black**WENIG**£15.30**4.6★6,869 rev](https://www.amazon.co.uk/dp/B0F3W34CTZ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**MATEIN for Ryan Air Cabin Bag 40x30x20 Ryanair Underseat Bag 40x30x20 with Wet Pocket Travel Rucksack Cabin Size Water Resistant Carry On Backpack Perfect for Flights and Weekend Travel White**MATEIN**£18.82**76 rev3mo ago](https://www.amazon.co.uk/dp/B0GBSBT9LR) [**MATEIN for New Ryanair Cabin Bags 40x30x20 Underseat 24L TSA Travel Backpack Cabin Size with Wet Pocket Ryan Air Bag 40x30x20 Carry On Backpack for Women Fits 15.6 Inch Laptop Peacock Green**MATEIN**£14.94**217 rev3mo ago](https://www.amazon.co.uk/dp/B0GJJL15C5) [**ZOMFELT Ryanair Cabin Bags 40x30x20 Underseat Travel Backpack Cabin Size with Wet Pocket Travel Rucksack Hand Luggage Bag Flight Carry on Bag for Wizzair Easyjet Fit 15.6 Inch Laptop Black**ZOMFELT**£12.89**168 rev4mo ago](https://www.amazon.co.uk/dp/B0GFDQNYRK) [**Narwey for Ryanair Cabin Bags 40x30x20 Underseat Ryan Air Hospital Bag Foldable Travel Duffel Carry on Hand Luggage Weekend Bag for Women and Men 20L (Black)**Narwey**£12.87**150 rev4mo ago](https://www.amazon.co.uk/dp/B0FGCSQ49K) [**Ryanair Cabin Bags 40x30x20 Underseat 24L Small Travel Backpack Cabin Size Rucksack for Plane Hand Luggage Backpack Carry on Bag for Airplanes Ryan Air Cabin Bag 40x30x20 with USB Charging Port-Black**PUSLOM**£14.46**1,252 rev9mo ago](https://www.amazon.co.uk/dp/B0FLVK1L4W)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MATEIN for Ryan Air Cabin Bag 40x30x20 Ryanair Underseat Bag 40x30x20 with Wet Pocket Travel Rucksack Cabin Size Water Resistant Carry On Backpack Perfect for Flights and Weekend Travel White**MATEIN**£18.82**4.8★**▲ 75%**](https://www.amazon.co.uk/dp/B0GBSBT9LR) [**MATEIN for New Ryanair Cabin Bags 40x30x20 Underseat 24L TSA Travel Backpack Cabin Size with Wet Pocket Ryan Air Bag 40x30x20 Carry On Backpack for Women Fits 15.6 Inch Laptop Peacock Green**MATEIN**£14.94**4.7★**▲ 64%**](https://www.amazon.co.uk/dp/B0GJJL15C5) [**Yankony for Ryanair Cabin Bags 40x30x20 Underseat Travel Backpack Cabin Size Carry on Hand Luggage Bag for Airplanes Multiple Pockets Comfort Rucksack for Men and Women**Yankony**£14.71**4.6★**▲ 45%**](https://www.amazon.co.uk/dp/B0D9KCL62J) [**ZOMFELT Ryanair Cabin Bags 40x30x20 Underseat Travel Backpack Cabin Size with Wet Pocket Travel Rucksack Hand Luggage Bag Flight Carry on Bag for Wizzair Easyjet Fit 15.6 Inch Laptop Black**ZOMFELT**£12.89**4.6★**▲ 42%**](https://www.amazon.co.uk/dp/B0GFDQNYRK) [**VANKEV 40x30x20 Ryanair EasyJet Eurowings Wizz Air Cabin Bag Underseat 24L Travel Bag Hand Luggage Backpack Carry-ons Cabin Size for Airplanes Flight Travel Ruscksack Fit 15.6 Inch Laptop BEIGE**VANKEV**£29.14**4.6★**▲ 41%**](https://www.amazon.co.uk/dp/B0FKTGKDPQ)
**~~View all trending →~~**
## **What buyers say about 40 x 30 x 20 cm bag**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**18%
*“Great bag as it fits quite a lot”*
**Quality-Overall**16%
*“Amazing quality”*
**Pockets/Compartments**12%
*“lots of pockets”*
**Value For Money**10%
*“Excellent value”*
**Portability**6%
*“its quite portable”*
**Advertised Vs Actual Product**5%
*“As described”*
**Storage Capacity**5%
*“Great capacity”*
**Strength**3%
*“Good sturdy bag”*
**Weight Light**3%
*“Nice lightweight backpack”*
**Comfort-Overall**3%
*“Comfortable”*
### **What buyers complain about **
**Size-Overall**21%
*“Just too small”*
**Quality-Overall**6%
*“Low quality”*
**Advertised Vs Actual Product**5%
*“Not as described”*
**Durability**4%
*“Poor durability”*
**Strength**4%
*“Cheap fragile”*
**Zipper Quality**4%
*“the zip has come off”*
**Value For Money**3%
*“Cheap price”*
**Strap/String Quality**3%
*“The straps are not the best to be honest”*
**Stitch/Finish/Polish**2%
*“Weak stitching, burst on first use”*
**Weight Heavy**2%
*“too heavy in itself”*
### **Top return reasons **
**Size-Overall**50%
**Quality-Overall**11%
**Wrong Dimensions**5%
**Material Quality**4%
**Zipper Quality**3%
**Strength**3%
**Color**3%
**Advertised Vs Actual Product**3%
**Strap/String Quality**2%
**Pockets/Compartments**2%
## **Common questions**
- **Is 40 x 30 x 20 cm bag profitable to sell on Amazon United Kingdom?**
- The niche generates £231K/yr across 61 tracked products. 23 of 28 products launched in the last 360 days are still selling. 90-day search growth is +8.1%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the 40 x 30 x 20 cm bag niche?**
- 25 brands and 31 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 49% of demand.
- **What do buyers complain about in 40 x 30 x 20 cm bag?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Advertised Vs Actual Product. The return rate is 2.1%.
- **What does it cost to enter the 40 x 30 x 20 cm bag niche?**
- Listings span £8.41–£32.27; the average listing price is £16.67 (sweet spot $15–$100). The average incumbent carries 2,929 reviews — the moat a new listing must climb.
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