---
title: "Maternity Knickers — £62K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/fashion/maternity-knickers"
last_updated: "2026-07-31T18:44:51.976Z"
locale: en
meta:
description: "Niche score 52/100 · £62K/yr market · 256K searches/yr · £16.05 avg price. A small market ($62K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £62K/yr market · 256K searches/yr · £16.05 avg price. A small market ($62K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Maternity Knickers — £62K/yr Amazon UK Niche (2026) - Flapen"
---
# **maternity knickers**
**Worth a look**
Shows low returns (0.9%), but a small market ($62K/yr) keeps it on the watch list.
Market size 16Growth 17Conversion 19Competition 79Returns 95Price range 64Avg price 78Brand share 83Review moat 33Quality gap 70
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Brand share**
**Great****52%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Avg price**
**Great****£16.05**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****£7.48–£28.43**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****3,177.02**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.5%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-15.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£62K**
£62K/yr · 256K searches
According to Flapen's Amazon United Kingdom niche tracking, maternity knickers is a £62K/yr Amazon United Kingdom market (256K searches/yr). The top 5 brands hold 52% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 52/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **maternity knickers market data**
- **Units sold / yr**
- **3K–4K**
- avg 0–100/product
- **Revenue / yr**
- **£48K–£64K**
- units × avg price
- **Conversion rate**
- **1.5%**
- **Avg BSR**
- **#26**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **88%**
- **Out of stock**
- **3.3%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **188 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**26 **▲rising
**Sellers**
**37**
**Top-5 brand share**
**52%**
Top 20: 96%
**Top-5 click share**
**36%**
Top 20: 68%
**Open market**
**41%**
- HBselect21% - INNERSY9% - momcozy8% - Intimate Portal8% - Diawsome7% - SUNNYBUY7%
## **Demand & seasonality**
Weekly Amazon search volume, last 63 weeks — -15.8% search growth over the last 90 days.
6K4KSpike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Jan, Feb · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/uk/fashion/maternity-knickers/trend)
## **Top maternity knickers search terms**
- **maternity pants**92K/yr-14.3%0.9% conv. - **maternity underwear**45K/yr-7.4%0.6% conv. - **maternity knickers**51K/yr-12.6%0.7% conv. - **maternity knickers over bump**12K/yr+30.2%0.8% conv. - **maternity underwear for pregnancy**9K/yr+10.4%0.7% conv. - **pregnancy pants**9K/yr+9.6%0.4% conv. - **pregnancy underwear**7K/yr-38.4%0.7% conv. - **cotton maternity knickers**5K/yr+23.4%0.6% conv. - **pregnancy underwear women**6K/yr+2.4%0.8% conv. - **pregnancy knickers**4K/yr-1.5%0.5% conv. [**All search terms **](https://flapen.com/research/uk/fashion/maternity-knickers/search-terms)
## **Top maternity knickers 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%3%£2K6%£4K9%£6K12%£7K101001K10K100K 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**HBselect 6 Pack Womens Maternity Knickers Cotton Pregnancy Panties Under Bump Maternity Underwear**HBselect**£14.44**4.6★6,780 rev](https://www.amazon.co.uk/dp/B099WWFZ5B) [2**momcozy Womens Maternity High Waist Underwear Pregnancy Soft Seamless Maternity Underwear Over Bump**momcozy**£24.03**4.1★39 rev](https://www.amazon.co.uk/dp/B0DPWVKJXJ) [3**Frida Mom Postpartum Disposable Knickers | Microfibre Boyshort Cut Knickers with Super Soft Stretchy and Breathable Fabric | Size Regular 8ct**Frida Mom**£11.56**4.8★16,753 rev](https://www.amazon.co.uk/dp/B07THFQS6Y) [4**TUTUESTHER High Waist Postpartum Underwear Women Cotton Full Briefs Tummy Control Panties(12 Classic Black)**TUTUESTHER**£14.90**4.4★1,208 rev](https://www.amazon.co.uk/dp/B07T3DQHTL) [5**HBselect 6 Pack Women Under The Bump Maternity Knickers Bikini Cotton Pregnancy Underwear**HBselect**£11.99**4.4★729 rev](https://www.amazon.co.uk/dp/B0F9L2R2XL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HBselect 6 Pack Women Under The Bump Maternity Knickers Bikini Cotton Pregnancy Underwear**HBselect**£11.99**729 rev1y ago](https://www.amazon.co.uk/dp/B0F9L2R2XL) [**Diawsome Maternity Thongs Over Bump 5 Pack Seamless Pregnancy Knickers for Women High Waist Belly Support Underwear with Soft Cotton Gusset**Diawsome**£28.20**12 rev1y ago](https://www.amazon.co.uk/dp/B0F42PNCL8) [**ZiaWorld 4 Pack Maternity Knickers for Women Adjustable Soft Cotton Over Bump Underwear Hipster Panties Comfortable Breathable Pregnancy Seamless Briefs (UK Alpha XXL Regular Regular Multicolor)**ZiaWorld**£12.46**42 rev1y ago](https://www.amazon.co.uk/dp/B0DX2FNJVW) [**Diawsome Maternity Thongs Over Bump 3 Pack Seamless Pregnancy Knickers for Women High Waisted Belly Support Underwear Shapewear**Diawsome**£22.50**19 rev1y ago](https://www.amazon.co.uk/dp/B0DSFZGDXD) [**momcozy Womens Maternity High Waist Underwear Pregnancy Soft Seamless Maternity Underwear Over Bump**momcozy**£24.03**39 rev1y ago](https://www.amazon.co.uk/dp/B0DPWVKJXJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Diawsome Maternity Thongs Over Bump 5 Pack Seamless Pregnancy Knickers for Women High Waist Belly Support Underwear with Soft Cotton Gusset**Diawsome**£28.20**4.1★**▲ 56%**](https://www.amazon.co.uk/dp/B0F42PNCL8) [**Diawsome Maternity Thongs Over Bump 3 Pack Seamless Pregnancy Knickers for Women High Waisted Belly Support Underwear Shapewear**Diawsome**£22.50**4.2★**▲ 45%**](https://www.amazon.co.uk/dp/B0DSFZGDXD) [**momcozy Womens Maternity High Waist Underwear Pregnancy Soft Seamless Maternity Underwear Over Bump**momcozy**£24.03**4.1★**▲ 42%**](https://www.amazon.co.uk/dp/B0DPWVKJXJ) [**HBselect 6 Pack Women Under The Bump Maternity Knickers Bikini Cotton Pregnancy Underwear**HBselect**£11.99**4.4★**▲ 37%**](https://www.amazon.co.uk/dp/B0F9L2R2XL) [**TUTUESTHER High Waist Postpartum Underwear Women Cotton Full Briefs Tummy Control Panties(12 Classic Black)**TUTUESTHER**£14.90**4.4★**▲ 28%**](https://www.amazon.co.uk/dp/B07T3DQHTL)
**~~View all trending →~~**
## **What buyers say about maternity knickers**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**36%
*“So comfortable”*
**Size-Overall**10%
*“Fits just right”*
**Quality-Overall**9%
*“Decent leggings”*
**Value For Money**8%
*“Worth the money”*
**Soft Feel**7%
*“Comfy and soft”*
**Stretchability/Expandability/Elasticity**4%
*“They have good strong stretch”*
**Material Quality**2%
*“Good quality material and very comfortable”*
**Waist Fit**2%
*“Adjustable waistband is perfect”*
**Machine Wash Suitability**2%
*“Wash nicely too”*
**Ease Of Use**1%
*“Practical”*
### **What buyers complain about **
**Size-Overall**12%
*“small”*
**Smell**11%
*“Strange scent”*
**Quality-Overall**8%
*“Poor quality”*
**Material Quality**5%
*“Wish they were more like athletic wear material as they feel quite thin”*
**Thickness**4%
*“Thin”*
**Allergies**4%
*“The material made me extremely itchy”*
**Comfort-Overall**3%
*“uncomfortable in comparison”*
**Stretchability/Expandability/Elasticity**3%
*“they dont seem to have much stretch at all for bump to grow”*
**Thigh Fit**3%
*“The front goes in between thighs”*
**Value For Money**2%
*“high price for me”*
### **Top return reasons **
**Size-Overall**29%
**Material Quality**16%
**Thin**10%
**Transparency**9%
**Smell**6%
**Quality-Overall**5%
**Waist Fit**4%
**Thigh Fit**4%
**Length**3%
**Gap/Hole**2%
## **Common questions**
- **Is maternity knickers profitable to sell on Amazon United Kingdom?**
- The niche generates £62K/yr across 57 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -15.8%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the maternity knickers niche?**
- 26 brands and 37 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 52% of demand.
- **What do buyers complain about in maternity knickers?**
- Top complaints mined from reviews: Size-Overall, Smell, Quality-Overall. The return rate is 0.9%.
- **When does demand for maternity knickers peak?**
- Demand peaks in Jan–Feb; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the maternity knickers niche?**
- Listings span £7.48–£28.43; the average listing price is £16.05 (sweet spot $15–$100). The average incumbent carries 3,177 reviews — the moat a new listing must climb.
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