si belt
Worth a lookShows a sweet-spot price point ($34.21 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$34.21avg listing price — sweet spot $15–$100
Price range
Great$12.48–$58.40cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Great$1.7M$1.7M/yr · 891K searches
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Conversion
Good5.5%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
Okay82%top-5 brand share — brands hold most of the demand
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Review moat
Bad11,721.13avg incumbent reviews — the moat a new listing must climb
Returns
Bad6.9%return rate — above 5% kills the launch gate
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
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.Peak months: Jun · busiest ÷ quietest = 1.7×
Top si belt search terms
- si belt165K/yr
- si joint belt for women113K/yr
- serola sacroiliac belt102K/yr
- sacroiliac belt66K/yr
- si belt for women83K/yr
- si joint belt61K/yr
- pelvic support belt36K/yr
- serola belt41K/yr
- sacroiliac belt women54K/yr
- si belt for men27K/yr
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.
All 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$26.444.3★20,207 rev
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$29.444.3★9,989 rev
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$58.294.4★6,777 rev
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$19.104.4★1,497 rev
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$58.404.4★6,777 rev
Newest
by launch date
Tovrinala Sacroiliac SI Joint Hip Belt for Women and Men Lower Back Support Brace Sciatica Pain Relief Breathable & Adjustable
Tovrinala$29.5620 rev
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$29.5579 rev
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$12.48667 rev
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$29.599,989 rev
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$26.29405 rev
Trending
90-day click momentumTovrinala Sacroiliac SI Joint Hip Belt for Women and Men Lower Back Support Brace Sciatica Pain Relief Breathable & Adjustable
Tovrinala$29.564.4★
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$58.244.4★
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$29.554.6★
ChongErfei 3 in 1 Postpartum Support - Recovery Belly/waist/pelvis Belt Shapewear Slimming Girdle Beige L For Posture Correction
ChongErfei$23.744.2★
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$57.444.4★
What buyers say about si belt
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Fits as described”
“Comfortable and supportive”
“Truly helped SI joint pain”
“reasonably priced”
“Easy to use”
“As Advertised”
“Effectiveness”
“It's adjustable”
“Solid support and good quality”
What buyers complain about
“Runs small”
“It was very uncomfortable to wear”
“Does not help with pain at all”
“Cheap Velcro”
“Item received was used”
“it doesnt work even for one month”
“it didn't help at all”
“it kept sliding down”
“the smell was too strong for me”
“A little pricey”
Top return reasons
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.