---
title: "Reviews — under knee pillow for sleeping on back - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/under-knee-pillow-for-sleeping-on-back/reviews"
last_updated: "2026-08-09T23:08:37.426Z"
locale: en
meta:
  description: "Niche score 55/100 · $772K/yr market · 550K searches/yr · $26.25 avg price. Soft demand (-9.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 55/100 · $772K/yr market · 550K searches/yr · $26.25 avg price. Soft demand (-9.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — under knee pillow for sleeping on back - Flapen"
---

# **under knee pillow for sleeping on back**

**Worth a look**

Shows a sweet-spot price point ($26.25 avg), but soft demand (-9.7% this quarter) keeps it on the watch list.

Market size 72Growth 20Conversion 61Competition 49Returns 45Price range 84Avg price 95Brand share 71Review moat 25Quality gap 63

**Avg price**

**Incredible****$26.25**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$11.29–$37.30**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Market size**

**Good****$772K**

$772K/yr · 550K searches

**Brand share**

**Good****62%**

top-5 brand share — brands hold most of the demand

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Good****5.3%**

search→purchase rate — share of searches ending in a sale

**Competition**

**Okay****56%**

top-5 click share — leaders hold, buyers still browse

**Returns**

**Okay****3.4%**

return rate — above 5% kills the launch gate

**Review moat**

**Bad****4,038.68**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-9.7%**

90-day search growth — must beat 0% to launch

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")

## Reviews