---
title: "Slime Birthday Party Decorations — $28K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/slime-birthday-party-decorations"
last_updated: "2026-08-06T05:49:05.791Z"
locale: en
meta:
description: "Niche score 50/100 · $28K/yr market · 78K searches/yr · $16.48 avg price. A small market ($28K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $28K/yr market · 78K searches/yr · $16.48 avg price. A small market ($28K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Slime Birthday Party Decorations — $28K/yr Amazon US Niche (2026) - Flapen"
---
# **slime birthday party decorations**
**Worth a look**
Shows low returns (1.3%), but a small market ($28K/yr) keeps it on the watch list.
Market size 7Growth 30Conversion 27Competition 79Returns 90Price range 65Avg price 79Brand share 82Review moat 71Quality gap 19
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Brand share**
**Great****53%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Avg price**
**Great****$16.48**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****642.35**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$5.91–$31.87**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+3.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Okay****2.1%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$28K**
$28K/yr · 78K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, slime birthday party decorations is a $28K/yr Amazon United States market (78K searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Jan. Verdict: Worth a look — 50/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **slime birthday party decorations market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$41K–$49K**
- units × avg price
- **Conversion rate**
- **2.1%**
- **Avg BSR**
- **#3,960**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **98%**
- **Out of stock**
- **9.0%**
- **Avg brand age**
- **33 months**
- **Avg seller age**
- **139 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**27 **▼falling
**Sellers**
**39**
**Top-5 brand share**
**53%**
Top 20: 95%
**Top-5 click share**
**36%**
Top 20: 81%
**Open market**
**42%**
- Lezty15% - Xigejob13% - MOAXMOA10% - Suhelkit9% - Tingjoo6% - FUN KIDZ5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +3.6% search growth over the last 90 days.
2K2KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/slime-birthday-party-decorations/trend)
## **Top slime birthday party decorations search terms**
- **slime party decorations**27K/yr+1.3%2.1% conv. - **slime party**21K/yr+8.0%1.2% conv. - **slime birthday party decorations**21K/yr+1.3%1.9% conv. - **slime birthday party**5K/yr+21.3%1.1% conv. - **slime birthday**3K/yr-13.5%0.9% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/slime-birthday-party-decorations/search-terms)
## **Top slime birthday party decorations 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%3%$8266%$2K9%$2K12%$3K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Xigejob Slime Birthday Party Decorations Tableware - Splatter Splash Colorful Theme Pink Slime Party Supplies Dinnerware Paper Plate Cup Napkin Tablecloth Cutlery | Serves 24**Xigejob**$22.77**4.6★47 rev](https://www.amazon.com/dp/B0CSBBDBX4) [2**Suhelkit Slime Birthday Party Decorations Tableware Purple Glitter Splatter Splash Colorful Theme Slime Party Supplies Plate Cup Napkin Tablecloth Cutlery Serves 24**Suhelkit**$23.13**4.9★35 rev](https://www.amazon.com/dp/B0D4PKYNNG) [3**199 Pcs Slime Birthday Party Supplies Decorations - Colorful Its Slime Time Plates Napkins Cups Tableware Kit Tablecloth Backdrop Banner Cake Cupcake Toppers for Splatter Theme Girls Birthday Decor**Lezty**$28.82**5.0★6 rev](https://www.amazon.com/dp/B0F63LPBGP) [4**Slime Birthday Party Decorations Kit - Slime Queen Cake Topper Birthday Banner Cupcake Toppers Colorful Balloons for Kids Slime Party Baby Shower Party Supplies**MOAXMOA**$14.45**4.6★75 rev](https://www.amazon.com/dp/B08TQMYG4P) [5**Its Slime Time Theme Photography Backdrop 5x3ft Colorful Fiesta Happy Birthday Party Decoration Photo Background for Kids Baby Shower Newborn Cake Table Studio Props Banner**XLL**$6.72**4.7★217 rev](https://www.amazon.com/dp/B08CBP4664)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Owelleny Slime Birthday Party Decorations Pastel Pink Purple Glitter Splatter Splash Colorful Slime Party Supplies Plate Napkin Cup Banner Tablecloth Balloon Swirls Topper Cutlery Serves 24**Owelleny**$22.25**4 rev3mo ago](https://www.amazon.com/dp/B0GXPWLBDN) [**3PCS Its Slime Time Door Decorations Porch Banner Colorful Graffiti Splash Paint Photo Background Fiesta Slime Children Happy Birthday Party Hanging Backdrop Props Supplies Photography**ZANMENCNER**$13.22**2 rev6mo ago](https://www.amazon.com/dp/B0GFW84S79) [**196 Pcs Slime 9th Birthday Party Supplies Decorations - Colorful Slime Queen Plates Napkins Cups Tableware Table Cloth Backdrop Banner Cupcake Toppers for Splatter Splash Theme Birthday Decor**Lezty**$26.56**0 rev10mo ago](https://www.amazon.com/dp/B0FQTHKCH9) [**Roselush 16 Pcs Slime Party Favor Bags - Slime Lickers Candy & Art Decorations**Roselush**$17.54**7 rev1y ago](https://www.amazon.com/dp/B0FFH4FLTD) [**Tingjoo 213 Pcs Slime Party Decorations Include Balloons Banner Tablecloth Plates Napkins Cups and Cutlery Set for Birthday Art Painting Slime Time Splatter Splash Supplies Party Decors Serves 25**Tingjoo**$31.87**8 rev1y ago](https://www.amazon.com/dp/B0F6LVGDFS)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Owelleny Slime Birthday Party Decorations Pastel Pink Purple Glitter Splatter Splash Colorful Slime Party Supplies Plate Napkin Cup Banner Tablecloth Balloon Swirls Topper Cutlery Serves 24**Owelleny**$22.25**5.0★**▲ 297%**](https://www.amazon.com/dp/B0GXPWLBDN) [**Coume 1 Pcs Kids Art Paint Aprons Waterproof Cooking Bibs Slime Time Accessories for Splatter Slime Theme Birthday Party Decoration (White)**Coume**$6.94**4.6★**▲ 286%**](https://www.amazon.com/dp/B0DP9LSPGS) [**3PCS Its Slime Time Door Decorations Porch Banner Colorful Graffiti Splash Paint Photo Background Fiesta Slime Children Happy Birthday Party Hanging Backdrop Props Supplies Photography**ZANMENCNER**$13.22**5.0★**▲ 145%**](https://www.amazon.com/dp/B0GFW84S79) [**196 Pcs Slime 9th Birthday Party Supplies Decorations - Colorful Slime Queen Plates Napkins Cups Tableware Table Cloth Backdrop Banner Cupcake Toppers for Splatter Splash Theme Birthday Decor**Lezty**$26.56**0.0★**▲ 102%**](https://www.amazon.com/dp/B0FQTHKCH9) [**4 LB Huge Glassy Clear Slime Bucket Toy for Kids FunKidz 64 FL OZ Premade Big Crystal Slime Pack Gift with 29 Sets Add-ins Jumbo Slime Kit for Girls Boys Party Present**FUN KIDZ**$31.70**4.3★**▲ 63%**](https://www.amazon.com/dp/B0B2DCQ24T)
**~~View all trending →~~**
## **What buyers say about slime birthday party decorations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Fun/Entertainment Experience**19%
*“Great fun”*
**Quality-Overall**13%
*“also good with a little bit of lotion the clear slimes however were perfect no complaints about those”*
**Color**10%
*“vibrant colors”*
**Value For Money**9%
*“Good for the price”*
**Gifting Purpose**8%
*“Great gift”*
**Smell**5%
*“best part is that smell amazing super fruity”*
**Stretchability/Expandability/Elasticity**3%
*“it stretches good it was soooo fun”*
**Adhesion/Stickiness**2%
*“So no problems with getting the stickiness”*
**Ease Of Cleaning**2%
*“Kept her clean”*
**Advertised Vs Actual Product**2%
*“Exactly as advertised”*
### **What buyers complain about **
**Size-Overall**30%
*“The kit is very small”*
**Hard Feel**6%
*“The crystal slime was hard”*
**Advertised Vs Actual Product**4%
*“does NOT look like the photo”*
**Value For Money**3%
*“Little expensive”*
**Mess Free**3%
*“the One of the three slimes cloud slime it's very messy”*
**Texture/Consistency-Overall**3%
*“the texture is a bit weird”*
**Adhesion/Stickiness**3%
*“arrived off stick”*
**Quality-Overall**2%
*“Not the best item do not buy”*
**Color**2%
*“all are different colors”*
**Ease Of Use**2%
*“Slime was hard to open”*
### **Top return reasons **
**Size-Overall**31%
**Advertised Vs Actual Product**12%
**Value For Money**9%
**Texture/Consistency-Overall**6%
**Moist/Dry**4%
**Material Quality**4%
**Quality-Overall**3%
**Stretchability/Expandability/Elasticity**3%
**Adhesion/Stickiness**3%
**Smell**3%
## **Common questions**
- **Is slime birthday party decorations profitable to sell on Amazon United States?**
- The niche generates $28K/yr across 40 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the slime birthday party decorations niche?**
- 27 brands and 39 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 53% of demand.
- **What do buyers complain about in slime birthday party decorations?**
- Top complaints mined from reviews: Size-Overall, Hard Feel, Advertised Vs Actual Product. The return rate is 1.3%.
- **When does demand for slime birthday party decorations peak?**
- Demand peaks in Jan; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the slime birthday party decorations niche?**
- Listings span $5.91–$31.87; the average listing price is $16.48 (sweet spot $15–$100). The average incumbent carries 642 reviews — the moat a new listing must climb.
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