---
title: "King Size Pillow Cases — £46K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/king-size-pillow-cases"
last_updated: "2026-08-01T04:06:42.651Z"
locale: en
meta:
description: "Niche score 40/100 · £46K/yr market · 131K searches/yr · £9.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · £46K/yr market · 131K searches/yr · £9.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "King Size Pillow Cases — £46K/yr Amazon UK Niche (2026) - Flapen"
---
# **king size pillow cases**
**Skip it**
A small market ($46K/yr) — this niche doesn't clear our bar today.
Market size 11Growth 12Conversion 46Competition 58Returns 95Price range 32Avg price 29Brand share 55Review moat 17Quality gap 43
**Returns**
**Great****1.0%**
return rate — above 5% kills the launch gate
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****3.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****£4.56–£19.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Okay****£9.50**
avg listing price — sweet spot $15–$100
**Review moat**
**Bad****17,899.28**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-26.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£46K**
£46K/yr · 131K searches
According to Flapen's Amazon United Kingdom niche tracking, king size pillow cases is a £46K/yr Amazon United Kingdom market (131K searches/yr). The top 5 brands hold 72% of demand. Verdict: Skip it — 40/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **king size pillow cases market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£48K–£57K**
- units × avg price
- **Conversion rate**
- **3.7%**
- **Avg BSR**
- **#94**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **76%**
- **Out of stock**
- **10.1%**
- **Avg brand age**
- **57 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**20**
**Top-5 brand share**
**72%**
Top 20: 100%
**Top-5 click share**
**50%**
Top 20: 92%
**Open market**
**24%**
- CGK Unlimited37% - NTBAY22% - Lirex5% - Ethel May5% - Comfort Beddings4% - Utopia Bedding4%
## **Demand & seasonality**
Weekly Amazon search volume, last 85 weeks — -26.5% search growth over the last 90 days.
3K2KSpike '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/home-garden/king-size-pillow-cases/trend)
## **Top king size pillow cases search terms**
- **extra large pillow cases**31K/yr-22.2%2.8% conv. - **king size pillow cases**29K/yr-45.3%3.8% conv. - **large pillow cases 2 pack**14K/yr-14.8%2.9% conv. - **king size pillow cases 2 pack**6K/yr+25.2%4.0% conv. - **50 x 90 pillow case**7K/yr-25.7%3.2% conv. - **kingsize pillow cases**6K/yr-17.2%2.5% conv. - **extra large pillow cases 70 x 90 cotton**5K/yr-18.3%2.5% conv. - **king pillow cases**6K/yr-23.5%4.9% conv. - **extra large pillow case**6K/yr-29.4%2.0% conv. - **50x90 pillow cases**6K/yr-36.5%4.6% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/king-size-pillow-cases/search-terms)
## **Top king size pillow cases 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%£2K8%£4K12%£6K16%£7K101001K10K100K1.0M 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**CGK 2 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£7.03**4.5★2,927 rev](https://www.amazon.co.uk/dp/B0C28RQN3K) [2**CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£7.03**4.5★2,927 rev](https://www.amazon.co.uk/dp/B0C28SKDG1) [3**NTBAY 2 Pack 500 Thread Count 100% Egyptian Cotton Pillowcases Super Soft Cozy and Breathable Envelope Closure King Pillow Cases 50x90 cm White**NTBAY**£14.71**4.5★12,809 rev](https://www.amazon.co.uk/dp/B07ZCQVMJB) [4**CGK 4 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£9.53**4.5★2,927 rev](https://www.amazon.co.uk/dp/B0C28ZSF73) [5**NTBAY 2 Pack 100% Brushed Microfiber Plain Pillowcases 1800 Super Soft and Cozy Wrinkle Fade Stain Resistant with Envelope Closure Bed Pillow Cases 50x90 cm White**NTBAY**£7.98**4.6★106,576 rev](https://www.amazon.co.uk/dp/B07H2YLSCB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM**LYMA**£6.51**384 rev1y ago](https://www.amazon.co.uk/dp/B0F8P7FK43) [**LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM**LYMA**£6.52**384 rev1y ago](https://www.amazon.co.uk/dp/B0DVZ9W6PX) [**Casa Platino 4 Pack Pillow Cases - King Size 50x90 cm - Pre-Washed 100% Brushed Microfiber with Envelope Closure Wrinkle Resistant and Soft - Silver**Casa Platino**£7.93**519 rev1y ago](https://www.amazon.co.uk/dp/B0DK7R1NBK) [**CGK 2 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£7.03**2,927 rev2y ago](https://www.amazon.co.uk/dp/B0C28RQN3K) [**CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£7.03**2,927 rev2y ago](https://www.amazon.co.uk/dp/B0C28SKDG1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM**LYMA**£6.51**4.6★**▲ 152%**](https://www.amazon.co.uk/dp/B0F8P7FK43) [**Lirex Extra Large Pillow Cases 2 Pack 1800 Thread Count Embroidered Soft Brushed Microfiber Pillowcases Blue**Lirex**£8.49**4.4★**▲ 151%**](https://www.amazon.co.uk/dp/B07F1KTJ6F) [**CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified**CGK Unlimited**£7.03**4.5★**▲ 112%**](https://www.amazon.co.uk/dp/B0C28SKDG1) [**LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM**LYMA**£6.52**4.6★**▲ 98%**](https://www.amazon.co.uk/dp/B0DVZ9W6PX) [**Mirha Extra Large Pillow Case Pair 100% Egyptian Cotton White - 50CM X 90CM +15CM**MIRHA**£7.33**4.4★**▲ 54%**](https://www.amazon.co.uk/dp/B0B1T33D47)
**~~View all trending →~~**
## **What buyers say about king size pillow cases**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“This bedding is of a very good quality”*
**Soft Feel**18%
*“Soft cotton”*
**Size-Overall**13%
*“Fit good”*
**Value For Money**8%
*“Fair Price”*
**Comfort-Overall**6%
*“So comfortable”*
**Material Quality**5%
*“Nice material and feel comfortable to sleep on”*
**Cushion**5%
*“comfortable pillow cases”*
**Advertised Vs Actual Product**4%
*“Exactly as described”*
**Upholstery/Fabric Quality**3%
*“The cotton feels nice enough”*
**Washability**3%
*“easy to wash”*
### **What buyers complain about **
**Size-Overall**26%
*“Too narrow”*
**Thickness**11%
*“they are not very thick”*
**Quality-Overall**10%
*“Not great quality”*
**Material Quality**6%
*“Cheap fabric”*
**Thin**4%
*“Very thin”*
**Color**4%
*“I just wish they had a choice of colours though”*
**Value For Money**3%
*“Not worth the money”*
**Advertised Vs Actual Product**3%
*“Not as expected”*
**Hard Feel**3%
*“Not soft”*
**Cushion**3%
*“Was expecting a slightly softer pillow”*
### **Top return reasons **
**Size-Overall**57%
**Color**13%
**Material Quality**10%
**Quality-Overall**7%
**Thin**2%
**Cushion**2%
**Hard Feel**1%
**Advertised Vs Actual Product**1%
**Stain Resistance**1%
**Thickness**1%
## **Common questions**
- **Is king size pillow cases profitable to sell on Amazon United Kingdom?**
- The niche generates £46K/yr across 29 tracked products. 90-day search growth is -26.5%. Flapen's verdict: Skip it (40/100).
- **How competitive is the king size pillow cases niche?**
- 17 brands and 20 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in king size pillow cases?**
- Top complaints mined from reviews: Size-Overall, Thickness, Quality-Overall. The return rate is 1.0%.
- **When does demand for king size pillow cases peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the king size pillow cases niche?**
- Listings span £4.56–£19.85; the average listing price is £9.50 (sweet spot $15–$100). The average incumbent carries 17,899 reviews — the moat a new listing must climb.
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