---
title: "16x38 Pillow Insert — $75K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/16x38-pillow-insert"
last_updated: "2026-08-09T07:36:21.070Z"
locale: en
meta:
description: "Niche score 51/100 · $75K/yr market · 24K searches/yr · $32.00 avg price. A small market ($75K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $75K/yr market · 24K searches/yr · $32.00 avg price. A small market ($75K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "16x38 Pillow Insert — $75K/yr Amazon US Niche (2026) - Flapen"
---
# **16x38 pillow insert**
**Worth a look**
Shows a sweet-spot price point ($32.00 avg), but a small market ($75K/yr) keeps it on the watch list.
Market size 19Growth 81Conversion 86Competition 23Returns 50Price range 95Avg price 95Brand share 27Review moat 40Quality gap 53
**Avg price**
**Incredible****$32.00**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.14–$51.76**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.7%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Great****+74.8%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Good****3.0%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****2,539.54**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****73%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$75K**
$75K/yr · 24K searches
According to Flapen's Amazon United States niche tracking, 16x38 pillow insert is a $75K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 51/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **16x38 pillow insert market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$80K–$96K**
- units × avg price
- **Conversion rate**
- **9.7%**
- **Avg BSR**
- **#88**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **85%**
- **Out of stock**
- **2.1%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **186 days**
## **Competition & brand share**
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**11**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**73%**
Top 20: 100%
**Open market**
**5%**
- MoonRest49% - Pillowflex14% - MIULEE11% - Kimberbell8% - JoraLion7% - Poly-Fil6% - Open — no brand owns it (2 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — +74.8% search growth over the last 90 days.
2K2KBlack Friday '24Prime Day '25Spike '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 5.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/16x38-pillow-insert/trend)
## **Top 16x38 pillow insert search terms**
- **16x38 lumbar pillow insert**8K/yr+219.3%11.2% conv. - **16x38 pillow insert**12K/yr+1.2%10.6% conv. - **16 x 38 pillow insert**4K/yr+27.1%12.8% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/16x38-pillow-insert/search-terms)
## **Top 16x38 pillow insert 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%10%$7K20%$15K30%$22K40%$30K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**MoonRest 16x38 Inch Synthetic Down Alternative Rectangle Pillow Insert Form Stuffer for Sofa Shams Decorative Throw Pillow Cushion and Bed Pillow Stuffing - Hypoallergenic 16X 38**MoonRest**$34.84**4.3★21 rev](https://www.amazon.com/dp/B0DPB7KL3K) [2**MoonRest Premium Lumbar Polyester 100% Cotton Fabric Filled with 100% Pure Virgin Synthetic Fiberfill Decorative Throw Pillow Insert Stuffer Form for Sofa Couch Cushion Bedroom 16x36**MoonRest**$23.54**4.6★1,786 rev](https://www.amazon.com/dp/B07BH775KJ) [3**Pillowflex Synthetic Down Pillow Insert 16x38 in - Karate Chop Pillow**Pillowflex**$48.01**4.7★11,608 rev](https://www.amazon.com/dp/B095J6P8NH) [4**Kimberbell 16 x 38 Plush Bench Pillow Insert Premium Throw Pillow Form for Seasonal & Holiday Dcor Vacuum Packed for Storage Ideal for Kimberbell Machine Embroidery Projects**Kimberbell**$30.92**4.6★233 rev](https://www.amazon.com/dp/B09G794V59) [5**MIULEE 14x36 Inch Synthetic Down Alternative Lumbar Pillow Insert**MIULEE**$19.14**4.7★805 rev](https://www.amazon.com/dp/B0F59KQY9D)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**puredown 16x38 Feather Down Pillow Insert Set of 1 Large Lumbar Pillow Inserts for or Bed Cushion Couch Sofa Decorative Long Pillow Insert with Down-Proof Cover**puredown**$33.45**4,130 rev3mo ago](https://www.amazon.com/dp/B0GWPXMPG4) [**Oubonun 16x36 Throw Pillow Insert Plush and Supportive Decorative Cushion with 100% Cotton Cover for Couch Sofa Bed Chair Pack of 1**Oubonun**$28.45**14 rev9mo ago](https://www.amazon.com/dp/B0FXFTMX7R) [**MIULEE 14x36 Inch Synthetic Down Alternative Lumbar Pillow Insert**MIULEE**$19.14**805 rev1y ago](https://www.amazon.com/dp/B0F59KQY9D) [**JoraLion 16x38 inch Pillow Insert Suitable for 14x36 Covers Ultra Soft Throw Pillow Insert Polypropylene Cotton Form for Couch Sofa Bed Living Room Decor**JoraLion**$30.65**16 rev1y ago](https://www.amazon.com/dp/B0F2Y8LKR5) [**Pillowflex Synthetic Down Pillow Insert 16x36 in - Karate Chop Pillow**Pillowflex**$37.12**11,608 rev1y ago](https://www.amazon.com/dp/B0F2N3R7WH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**puredown 16x38 Feather Down Pillow Insert Set of 1 Large Lumbar Pillow Inserts for or Bed Cushion Couch Sofa Decorative Long Pillow Insert with Down-Proof Cover**puredown**$33.45**4.5★**▲ 148%**](https://www.amazon.com/dp/B0GWPXMPG4) [**Pillowflex Synthetic Down Pillow Insert 16x36 in - Karate Chop Pillow**Pillowflex**$37.12**4.7★**▲ 102%**](https://www.amazon.com/dp/B0F2N3R7WH) [**Oubonun 16x36 Throw Pillow Insert Plush and Supportive Decorative Cushion with 100% Cotton Cover for Couch Sofa Bed Chair Pack of 1**Oubonun**$28.45**4.2★**▲ 95%**](https://www.amazon.com/dp/B0FXFTMX7R) [**MIULEE 14x36 Throw Pillow Insert Virgin Microfiber Pillow for Couch Bed**MIULEE**$20.81**4.7★**▲ 42%**](https://www.amazon.com/dp/B0DNF711CR) [**MIULEE 14x36 Inch Synthetic Down Alternative Lumbar Pillow Insert**MIULEE**$19.14**4.7★**▲ 31%**](https://www.amazon.com/dp/B0F59KQY9D)
**~~View all trending →~~**
## **What buyers say about 16x38 pillow insert**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**22%
*“fits the pillow cover nicely”*
**Quality-Overall**14%
*“Made the perfect addition”*
**Fluffiness**11%
*“Full, fluffy, and exactly what my pillow cover needed”*
**Cushion**6%
*“Full, fluffy, and exactly what my pillow cover needed”*
**Foam**6%
*“Great filler pillow”*
**Comfort-Overall**6%
*“very comfortable”*
**Soft Feel**5%
*“Soft and great fit for the decorative pillow I got”*
**Advertised Vs Actual Product**5%
*“It does the job”*
**Value For Money**4%
*“Great deal”*
**Body Support**3%
*“Perfect little supportive accent pillow”*
### **What buyers complain about **
**Quality-Overall**22%
*“Junk”*
**Size-Overall**15%
*“Not 14x36”*
**Value For Money**14%
*“Doubling the price”*
**Advertised Vs Actual Product**6%
*“Product description is inaccurate”*
**Strength**4%
*“However, the middle lacks the same level of filler as the ends and is flimsy”*
**Stretchability/Expandability/Elasticity**1%
*“It took about a day to fully expand after opening”*
### **Top return reasons **
**Size-Overall**56%
**Cushion**14%
**Value For Money**5%
**Advertised Vs Actual Product**4%
**Color**3%
**Quality-Overall**2%
**Functionality-Overall**2%
**Fluffiness**2%
**Material Quality**1%
**Soft Feel**1%
## **Common questions**
- **Is 16x38 pillow insert profitable to sell on Amazon United States?**
- The niche generates $75K/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +74.8%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the 16x38 pillow insert niche?**
- 8 brands and 11 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in 16x38 pillow insert?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Value For Money. The return rate is 3.0%.
- **When does demand for 16x38 pillow insert peak?**
- Demand peaks in Oct–Nov; the busiest month runs 5.0× the quietest.
- **What does it cost to enter the 16x38 pillow insert niche?**
- Listings span $19.14–$51.76; the average listing price is $32.00 (sweet spot $15–$100). The average incumbent carries 2,540 reviews — the moat a new listing must climb.
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