---
title: "Sleepover Party Supplies for Girls — $627K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/sleepover-party-supplies-for-girls"
last_updated: "2026-08-10T06:58:14.106Z"
locale: en
meta:
description: "Niche score 59/100 · $627K/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 59/100 · $627K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Sleepover Party Supplies for Girls — $627K/yr Amazon US Niche (2026) - Flapen"
---
# **sleepover party supplies for girls**
**Worth a look**
Shows a fragmented shelf (top 5 take 18% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 65Growth 17Conversion 16Competition 95Returns 72Price range 83Avg price 95Brand share 93Review moat 49Quality gap 24
**Competition**
**Incredible****18%**
top-5 click share — an open shelf
**Avg price**
**Incredible****$26.16**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****42%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$5.75–$68.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$627K**
$627K/yr · 1.8M searches
**Review moat**
**Okay****1,622.01**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-16.1%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.3%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, sleepover party supplies for girls is a $627K/yr Amazon United States market (1.8M searches/yr). The top 5 brands hold 42% of demand. Verdict: Worth a look — 59/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sleepover party supplies for girls market data**
- **Units sold / yr**
- **30K–40K**
- avg 250–500/product
- **Revenue / yr**
- **$785K–$1.0M**
- units × avg price
- **Conversion rate**
- **1.3%**
- **Avg BSR**
- **#908**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **97%**
- **Out of stock**
- **1.9%**
- **Avg brand age**
- **32 months**
- **Avg seller age**
- **148 days**
## **Competition & brand share**
Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.
**Brands**
**83 **▼falling
**Sellers**
**128**
**Top-5 brand share**
**42%**
Top 20: 69%
**Top-5 click share**
**18%**
Top 20: 49%
**Open market**
**55%**
- Sintuff24% - KONEUK7% - LINEMIN4% - Fanfanwin3% - Guifizeiom3% - xo, Fetti3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -16.1% search growth over the last 90 days.
50K30KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/sleepover-party-supplies-for-girls/trend)
## **Top sleepover party supplies for girls search terms**
- **sleepover party supplies for girls**358K/yr-15.5%1.6% conv. - **spa party supplies for girls**220K/yr-27.7%1.5% conv. - **sleepover**148K/yr+29.3%0.1% conv. - **slumber party supplies for girls**176K/yr-22.3%1.5% conv. - **sleepover stuff**114K/yr-4.0%0.2% conv. - **sleep over party supplies for girls**87K/yr-16.3%0.8% conv. - **spa party**90K/yr-28.4%1.1% conv. - **spa party favors**81K/yr-22.6%1.0% conv. - **spa birthday party supplies for girls**80K/yr-32.9%1.2% conv. - **slumber party**56K/yr+2.2%0.7% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/sleepover-party-supplies-for-girls/search-terms)
## **Top sleepover party supplies for girls 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%2%$13K4%$25K6%$38K8%$50K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**LINEMIN Womens Fuzzy Socks Cozy Fluffy Winter Warm Slipper Socks Microfiber Soft Home Sleeping Socks (5 Pack Soild Color B)**LINEMIN**$9.74**4.6★3,829 rev](https://www.amazon.com/dp/B09BN6Q93J) [2**Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 8 Pink)**Sintuff**$50.40**4.7★522 rev](https://www.amazon.com/dp/B0BZPXQ8SY) [3**Sintuff 24 Pcs Sleepover Party Supplies for Girls 6 Spa Robes for Girls Slumber Party 6 Tote Bags 6 Headbands 6 Spa Masks(Size 12 Multicolor)**Sintuff**$52.91**4.6★497 rev](https://www.amazon.com/dp/B0CX59HL2R) [4**Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 10 Purple)**Sintuff**$50.99**4.7★522 rev](https://www.amazon.com/dp/B0CWTR9MWB) [5**Guifizeiom Spa Party Supplies for Girls 6 Satin Robes Kids Spa Birthday Sleepover Supplies Kit(5 Rose 1 Pink)**Guifizeiom**$59.45**4.4★58 rev](https://www.amazon.com/dp/B0F66DBG1X)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nyxuso Spa Party Supplies for Girls Spa Robes for Kids Party Supplies Birthday Sleepover Favors (Pink Size 8)**Nyxuso**$52.74**6 rev5mo ago](https://www.amazon.com/dp/B0GKG1QCSB) [**100 PCS Spa Party Supplies for Girls Spa Party Favors Include Face Masks Skincare Hand Cream Lip Balm Under Eye Patches Lip Mask and Foot Bath Bombs Spa Birthday Sleepover Party Supplies**HHXI**$25.09**105 rev8mo ago](https://www.amazon.com/dp/B0FXLZTD74) [**110PCS Spa Party Supplies for Girls Spa Day Kit Include Face Masks Skincare Hand Cream Lip Balm Under Eye Patches Mini Hair Brush Birthday Sleepover Party Supplies for Teen Girls Spa Gifts**VESPRO**$31.09**114 rev11mo ago](https://www.amazon.com/dp/B0FGXKL8LV) [**60PCS Spa Party Supplies for Girls Include Face Masks Hand Cream Lip Balm Foot Bath Bombs Lip Mask Under Eye Patches Compressed Towels Spa Birthday and Sleepover Party Supplies for Girls Women**KONEUK**$22.13**248 rev1y ago](https://www.amazon.com/dp/B0FDFGDLMZ) [**80PCS Spa Party Supplies for Girls Include Facial Masks Lip Balm Hand Cream Under Eye Patches Lip Mask Foot Bath Bombs Compressed Towels Sleepover and Spa Birthday Party Supplies for Girls**KONEUK**$25.39**118 rev1y ago](https://www.amazon.com/dp/B0FDFHW224)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 12 Sky Blue)**Sintuff**$50.57**4.7★**▲ 251%**](https://www.amazon.com/dp/B0DLNTKY1B) [**Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 14 Pink)**Sintuff**$50.52**4.7★**▲ 243%**](https://www.amazon.com/dp/B0CM3JP74D) [**Sintuff 24 Pcs Sleepover Party Supplies for Girls 6 Spa Robes for Girls Slumber Party 6 Tote Bags 6 Headbands 6 Spa Masks(Size 12 Multicolor)**Sintuff**$52.91**4.6★**▲ 183%**](https://www.amazon.com/dp/B0CX59HL2R) [**Sintuff Girls Spa Party Supplies 24 Pcs-6 Robes 6 Headbands 6 Eye Masks & 6 Tote Bags for Sleepover Slumber Birthday Party(Size 10 Purple)**Sintuff**$50.99**4.7★**▲ 156%**](https://www.amazon.com/dp/B0CWTR9MWB) [**Nyxuso Spa Party Supplies for Girls Spa Robes for Kids Party Supplies Birthday Sleepover Favors (Pink Size 8)**Nyxuso**$52.74**4.4★**▲ 142%**](https://www.amazon.com/dp/B0GKG1QCSB)
**~~View all trending →~~**
## **What buyers say about sleepover party supplies for girls**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“It is a great quality set”*
**Gifting Purpose**12%
*“It was a gift”*
**Value For Money**12%
*“Amazing value”*
**Fun/Entertainment Experience**6%
*“Great Fun”*
**Soft Feel**6%
*“SUPER SOFT”*
**Color**5%
*“Beautiful Colors”*
**Smell**5%
*“Great Smell”*
**Comfort-Overall**4%
*“Very comfortable”*
**Ease Of Use**4%
*“Easy to use”*
**Advertised Vs Actual Product**3%
*“As described”*
### **What buyers complain about **
**Size-Overall**13%
*“runs a bit big”*
**Quality-Overall**12%
*“Very low quality product”*
**Durability**8%
*“Completely fell apart”*
**Adhesion/Stickiness**4%
*“Does not stick well”*
**Thickness**3%
*“These socks arent too thick”*
**Advertised Vs Actual Product**3%
*“Misleading description”*
**Strength**3%
*“very fragile”*
**Allergies**2%
*“they irritated my skin a little”*
**Value For Money**2%
*“not worth price”*
**Heating**2%
*“not hot enough”*
### **Top return reasons **
**Size-Overall**29%
**Color**10%
**Value For Money**10%
**Advertised Vs Actual Product**7%
**Quality-Overall**6%
**Defective Material/Parts**4%
**Functionality-Overall**4%
**Material Quality**3%
**Brightness/Shine/Glow**3%
**Heating**2%
## **Common questions**
- **Is sleepover party supplies for girls profitable to sell on Amazon United States?**
- The niche generates $627K/yr across 118 tracked products. 16 of 38 products launched in the last 360 days are still selling. 90-day search growth is -16.1%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the sleepover party supplies for girls niche?**
- 83 brands and 128 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 42% of demand.
- **What do buyers complain about in sleepover party supplies for girls?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 2.1%.
- **When does demand for sleepover party supplies for girls peak?**
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- **What does it cost to enter the sleepover party supplies for girls niche?**
- Listings span $5.75–$68.93; the average listing price is $26.16 (sweet spot $15–$100). The average incumbent carries 1,622 reviews — the moat a new listing must climb.
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