---
title: "Si Belt — $1.7M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/si-belt"
last_updated: "2026-08-11T05:56:49.849Z"
locale: en
meta:
description: "Niche score 56/100 · $1.7M/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 56/100 · $1.7M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Si Belt — $1.7M/yr Amazon US Niche (2026) - Flapen"
---
# **si belt**
**Worth a look**
Shows a sweet-spot price point ($34.21 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 89Growth 57Conversion 63Competition 32Returns 18Price range 91Avg price 95Brand share 38Review moat 21Quality gap 67
**Avg price**
**Incredible****$34.21**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.48–$58.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Great****$1.7M**
$1.7M/yr · 891K searches
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.5%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Good****+31.4%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****11,721.13**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Bad****6.9%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, si belt is a $1.7M/yr Amazon United States market (891K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jun. Verdict: Worth a look — 56/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **si belt market data**
- **Units sold / yr**
- **50K–60K**
- avg 4,000–5,000/product
- **Revenue / yr**
- **$1.7M–$2.1M**
- units × avg price
- **Conversion rate**
- **5.5%**
- **Avg BSR**
- **#23**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **3.2%**
- **Avg brand age**
- **52 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**20**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**14%**
- Vriksasana Posture30% - Serola26% - PlayActive12% - PARPERNA8% - ChongErfei5% - FALCOFIT5% - Open — no brand owns it (5 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +31.4% search growth over the last 90 days.
35K25KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/si-belt/trend)
## **Top si belt search terms**
- **si belt**165K/yr+41.9%4.4% conv. - **si joint belt for women**113K/yr+31.0%5.7% conv. - **serola sacroiliac belt**102K/yr+13.6%5.7% conv. - **sacroiliac belt**66K/yr+63.4%4.3% conv. - **si belt for women**83K/yr+25.1%5.8% conv. - **si joint belt**61K/yr+24.3%4.9% conv. - **pelvic support belt**36K/yr+73.4%1.0% conv. - **serola belt**41K/yr+32.7%4.2% conv. - **sacroiliac belt women**54K/yr-13.2%5.1% conv. - **si belt for men**27K/yr+23.6%6.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/si-belt/search-terms)
## **Top si belt 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%$168K20%$335K30%$503K40%$670K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Vriksasana Posture Sacroiliac Hip Belt for Women and Men That Alleviates Sciatic Pelvic Lower Back Leg and Sacral Nerve Pain Caused by Si Joint Dysfunction| Trochanter Brace (Regular Black)**Vriksasana Posture**$26.44**4.3★20,207 rev](https://www.amazon.com/dp/B078K759HK) [2**PlayActive Sacroiliac SI Joint Hip Belt - Lower Back Support Brace for Men and Women - Pelvic Support Belt - Trochanter Belt - Sciatica Pelvis Lumbar Hip Pain Relief (Regular)**PlayActive**$29.44**4.3★9,989 rev](https://www.amazon.com/dp/B07FDJ7S4Q) [3**Serola Sacroiliac Belt for SI Joint Dysfunction (Medium fits 34 to 40) Lower Back Pelvic & Hip brace for Women & Men | Non-Slip Adjustable & Breathable Brace**Serola**$58.29**4.4★6,777 rev](https://www.amazon.com/dp/B000NIFVLW) [4**PARPERNA Sacroiliac SI Hip Belt for Women Men SI Joint Hip Belt - Lower Back Support Brace - Pelvic Support - Adjustable Sciatica Pelvis Lumbar Pain Relief Trochanter Brace REGULAR (Size 30-45)**PARPERNA**$19.10**4.4★1,497 rev](https://www.amazon.com/dp/B09M7DRXBM) [5**Serola Sacroiliac Belt for SI Joint Dysfunction (Large fits 40 to 45) Lower Back Pelvic & Hip Support brace for Women & Men Non-Slip Adjustable & Breathable Brace**Serola**$58.40**4.4★6,777 rev](https://www.amazon.com/dp/B000NIFVM6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Tovrinala Sacroiliac SI Joint Hip Belt for Women and Men Lower Back Support Brace Sciatica Pain Relief Breathable & Adjustable**Tovrinala**$29.56**20 rev6mo ago](https://www.amazon.com/dp/B0GF9ZVVTZ) [**YCSHUNDONG Sacroiliac SI Joint Hip Belt for Women and Men - 8x Maximum Compression and Anti-slip - Sciatica Belt and Lower Back Support Brace - Hip Braces for SI Joints Pain Pelvic Support (M/L)**YCSHUNDONG**$29.55**79 rev10mo ago](https://www.amazon.com/dp/B0GMCYC8KM) [**FALCOFIT SI Belt for Men and Women Sacroiliac Pelvic Support for Lower Back Hip and Sciatica Pain Relief Adjustable Lumbar Brace for Pelvic Stability Widened Design (Medium)**FALCOFIT**$12.48**667 rev2y ago](https://www.amazon.com/dp/B0D99KDR31) [**PlayActive Sacroiliac SI Joint Hip Belt - Sciatica Belt and Lower Back Support Brace for Women and Men - Hip Braces for Hip Pain - Pelvic Support Belt Trochanter Belt for Pain Relief (Regular/Black)**PlayActive**$29.59**9,989 rev2y ago](https://www.amazon.com/dp/B0CRVTLQW9) [**Fitomo Sacroiliac Belt with Enhanced Compression Hip Brace for SI Joints Pain Lower Back Pain and Sciatica Nerve Relief SI Belt for Women Men Support for Pelvic Leg Back Anti-slip**Fitomo**$26.29**405 rev2y ago](https://www.amazon.com/dp/B0CMHRZ94N)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Tovrinala Sacroiliac SI Joint Hip Belt for Women and Men Lower Back Support Brace Sciatica Pain Relief Breathable & Adjustable**Tovrinala**$29.56**4.4★**▲ 180%**](https://www.amazon.com/dp/B0GF9ZVVTZ) [**Serola Sacroiliac Belt for SI Joint Dysfunction (X-Large fits 46 to 52) Lower Back Sciatic Pelvic & Hip Support brace for Women & Men | Non-Slip Adjustable & Breathable Pain Relief Brace**Serola**$58.24**4.4★**▲ 112%**](https://www.amazon.com/dp/B000NIFVMG) [**YCSHUNDONG Sacroiliac SI Joint Hip Belt for Women and Men - 8x Maximum Compression and Anti-slip - Sciatica Belt and Lower Back Support Brace - Hip Braces for SI Joints Pain Pelvic Support (M/L)**YCSHUNDONG**$29.55**4.6★**▲ 96%**](https://www.amazon.com/dp/B0GMCYC8KM) [**ChongErfei 3 in 1 Postpartum Support - Recovery Belly/waist/pelvis Belt Shapewear Slimming Girdle Beige L For Posture Correction**ChongErfei**$23.74**4.2★**▲ 94%**](https://www.amazon.com/dp/B01EVGLMM8) [**SEROLA Sacroiliac Belt for SI Joint Dysfunction (Small fits 30 to 34) Lower Back Sciatic Pelvic & Hip Support brace for Women & Men | Non-Slip Adjustable & Breathable Pain Relief Brace**Serola**$57.44**4.4★**▲ 60%**](https://www.amazon.com/dp/B07B56PW26)
**~~View all trending →~~**
## **What buyers say about si belt**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Excellent product”*
**Size-Overall**13%
*“Fits as described”*
**Comfort-Overall**12%
*“Comfortable and supportive”*
**Joint Pain**9%
*“Truly helped SI joint pain”*
**Value For Money**8%
*“reasonably priced”*
**Ease Of Use**7%
*“Easy to use”*
**Advertised Vs Actual Product**6%
*“As Advertised”*
**Efficiency**4%
*“Effectiveness”*
**Adjustability/Rotatability/Reclining**3%
*“It's adjustable”*
**Support-Overall**3%
*“Solid support and good quality”*
### **What buyers complain about **
**Size-Overall**19%
*“Runs small”*
**Comfort-Overall**8%
*“It was very uncomfortable to wear”*
**Pain Relief-Overall**6%
*“Does not help with pain at all”*
**Velcro Quality**6%
*“Cheap Velcro”*
**Product Condition**5%
*“Item received was used”*
**Durability**4%
*“it doesnt work even for one month”*
**Functionality-Overall**4%
*“it didn't help at all”*
**Grip**4%
*“it kept sliding down”*
**Smell**3%
*“the smell was too strong for me”*
**Value For Money**3%
*“A little pricey”*
### **Top return reasons **
**Size-Overall**58%
**Functionality-Overall**10%
**Comfort-Overall**8%
**Joint Pain**6%
**Advertised Vs Actual Product**6%
**Value For Money**2%
**Product Condition**1%
**Pain Relief-Overall**1%
**Material Quality**1%
**Weight Heavy**1%
## **Common questions**
- **Is si belt profitable to sell on Amazon United States?**
- The niche generates $1.7M/yr across 15 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +31.4%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the si belt niche?**
- 11 brands and 20 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in si belt?**
- Top complaints mined from reviews: Size-Overall, Comfort-Overall, Pain Relief-Overall. The return rate is 6.9% — above our launch gate.
- **When does demand for si belt peak?**
- Demand peaks in Jun; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the si belt niche?**
- Listings span $12.48–$58.40; the average listing price is $34.21 (sweet spot $15–$100). The average incumbent carries 11,721 reviews — the moat a new listing must climb.
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