silk long underwear women
Skip itSoft demand (-68.5% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$33.51avg listing price — sweet spot $15–$100
Competition
Great21%top-5 click share — an open shelf
Price range
Great$9.72–$56.25cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$253K$253K/yr · 1.8M searches
Review moat
Okay3,557.63avg incumbent reviews — the moat a new listing must climb
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Returns
Bad9.1%return rate — above 5% kills the launch gate
Conversion
Bad0.4%search→purchase rate — share of searches ending in a sale
Growth
Bad-68.5%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, silk long underwear women is a $253K/yr Amazon United States market (1.8M searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jan–Feb–Nov–Dec. Verdict: Skip it — 38/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
silk long underwear women market data
- Units sold / yr
- 8K–10K
- avg 0–100/product
- Revenue / yr
- $268K–$335K
- units × avg price
- Conversion rate
- 0.4%
- Avg BSR
- #427
- Page quality
- 0%
- Prime
- 99%
- Sponsored
- 93%
- Out of stock
- 8.2%
- Avg brand age
- 46 months
- Avg seller age
- 139 days
Competition & brand share
Clicks spread well past the top 5 (21% combined) — an open shelf where new products get seen.Brands
21 rising
Sellers
99
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
21%
Top 20: 50%
Open market
9%
- Cuddl Duds72%
- WEERTI7%
- Ekouaer5%
- COZYFIT3%
- Findsweet2%
- ENJOYNIGHT2%
- Open — no brand owns it (15 brands, 9%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -68.5% search growth over the last 90 days.Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 9.1×
Top silk long underwear women search terms
- cuddle duds women645K/yr
- cuddle duds women pajamas225K/yr
- cuddl duds145K/yr
- cuddle duds139K/yr
- cuddle duds womens tops146K/yr
- cuddl duds pajamas38K/yr
- cuddl duds women75K/yr
- silk long underwear women54K/yr
- cuddle duds women leggings51K/yr
- cuddl duds pajamas set womens15K/yr
Top silk long underwear women 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
WEERTI Thermal Underwear for Women Long Johns with Fleece Lined Base Layer Women Cold Weather Top Bottom-Black M
WEERTI$26.434.5★12,937 rev
Cuddl Duds Womens Heavyweight Fleece 2 Piece Long Sleeve Thermal Underwear Set Shirt & Leggings Base Layer for Cold Weather Winter Clothing Long Johns Lounge Sets for Women Black M
Cuddl Duds$34.254.7★6,365 rev
Cuddl Duds Womens 2 Piece Pajamas & Lounge Set - Cozy Soft Long Sleeve Sleepwear & Loungewear - Button Down Sleep Shirt & Long Pajama Pants with Pockets PJs Sets for Women Floral Ditsy M
Cuddl Duds$44.874.7★232 rev
Cuddl Duds Womens Heavyweight Fleece 2 Piece Long Sleeve Thermal Underwear Set Shirt & Leggings Base Layer for Cold Weather Winter Clothing Long Johns Lounge Sets for Women Purple L
Cuddl Duds$33.534.7★6,365 rev
Cuddl Duds Womens 2 Piece Matching Pajamas & Lounge Set - Cozy Soft Loungewear & Sleepwear - Long Sleeve Crewneck Sleep Pajama Shirt & Long PJs Pants with Pockets Sets for Women Grey Hearts L
Cuddl Duds$46.214.7★200 rev
Newest
by launch date
COZYFIT Womens Underscrub Tee Comfort V-Neck Long Sleeve Undershirt with Soft & Easy Care Fabric Black
COZYFIT$10.15625 rev
Cuddl Duds Womens 2 Piece Pajamas & Lounge Set - Cozy Soft Long Sleeve Sleepwear & Loungewear - Button Down Sleep Shirt & Long Pajama Pants with Pockets PJs Sets for Women Floral Ditsy M
Cuddl Duds$44.87232 rev
Cuddl Duds Womens 2 Piece Matching Pajamas & Lounge Set - Cozy Soft Loungewear & Sleepwear - Long Sleeve Crewneck Sleep Pajama Shirt & Long PJs Pants with Pockets Sets for Women Grey Hearts L
Cuddl Duds$46.21200 rev
Cuddl Duds Womens 2 Piece Matching Pajamas & Lounge Set - Cozy Soft Loungewear & Sleepwear - Long Sleeve Crewneck Sleep Pajama Shirt & Long PJs Pants with Pockets Sets for Women Blue Dots M
Cuddl Duds$45.44200 rev
Cuddl Duds Womens 2 Piece Matching Pajamas & Lounge Set - Cozy Soft Loungewear & Sleepwear - Long Sleeve Crewneck Sleep Pajama Shirt & Long PJs Pants with Pockets Sets for Women Animal Print M
Cuddl Duds$46.24200 rev
Trending
90-day click momentum
Findsweet 2026 Pajamas Sets for Women Soft Sleeveless Pjs Tank Top and Pants with Pocket Ladies Loungewear Sets XL fl Pink Star
Findsweet$13.864.8★
Cuddl Duds Womens 2 Piece Matching Pajamas & Lounge Set - Cozy Soft Loungewear & Sleepwear - Long Sleeve Crewneck Sleep Pajama Shirt & Long PJs Pants with Pockets Sets for Women Blue Dots M
Cuddl Duds$45.444.7★
Cuddl Duds Womens 2 Piece Pajamas & Lounge Set - Cozy Soft Long Sleeve Sleepwear & Loungewear - Button Down Sleep Shirt & Long Pajama Pants with Pockets PJs Sets for Women Black Dot S
Cuddl Duds$46.044.7★
Cuddl Duds Womens 2 Piece Pajamas & Lounge Set - Cozy Soft Long Sleeve Sleepwear & Loungewear - Button Down Sleep Shirt & Long Pajama Pants with Pockets PJs Sets for Women Animal Print M
Cuddl Duds$46.174.7★
Cuddl Duds Womens 2 Piece Pajamas & Lounge Set - Cozy Soft Long Sleeve Sleepwear & Loungewear - Button Down Sleep Shirt & Long Pajama Pants with Pockets PJs Sets for Women Floral Ditsy L
Cuddl Duds$45.284.7★
What buyers say about silk long underwear women
What buyers praise and complain about, mined from review topics.What buyers love
“And comfortable”
“Toasty warm”
“Fits as stated”
“Soft cotton”
“are higher quality than I anticipated”
“Material comfy”
“they are affordable”
“Color is vibrant”
“Lightweight and comfortable”
“Washed well”
What buyers complain about
“Runs very small”
“Cheap material”
“It's not thick and bulky,”
“Not a warm pair of pajamas”
“pants way too short”
“It is Cheap quality”
“Bulky”
“Chemical odor overwhelming”
“The pants are a bit tight in the waist though”
“A little expensive”
Top return reasons
Common questions
- Is silk long underwear women profitable to sell on Amazon United States?
- The niche generates $253K/yr across 99 tracked products. 3 of 41 products launched in the last 360 days are still selling. 90-day search growth is -68.5%. Flapen's verdict: Skip it (38/100).
- How competitive is the silk long underwear women niche?
- 21 brands and 99 sellers compete. The top 5 products take 21% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in silk long underwear women?
- Top complaints mined from reviews: Size-Overall, Material Quality, Thickness. The return rate is 9.1% — above our launch gate.
- When does demand for silk long underwear women peak?
- Demand peaks in Jan–Feb–Nov–Dec; the busiest month runs 9.1× the quietest.
- What does it cost to enter the silk long underwear women niche?
- Listings span $9.72–$56.25; the average listing price is $33.51 (sweet spot $15–$100). The average incumbent carries 3,558 reviews — the moat a new listing must climb.