---
title: "Kuromi Cup — $8K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/sports-outdoors/kuromi-cup"
last_updated: "2026-08-12T11:36:20.044Z"
locale: en
meta:
description: "Amazon product research for kuromi cup: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for kuromi cup: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Kuromi Cup — $8K/mo Amazon US Product Research (2026)"
---
# **Kuromi Cup**
**Skip it**
A small market ($91K/yr) — this niche doesn't clear our bar today.
Market size 23Growth 24Conversion 23Competition 78Returns 63Price range 83Avg price 95Brand share 62Review moat 25Quality gap 30
**Avg price**
**Incredible****$23.20**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.46–$46.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****4,134.48**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-1.7%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$91K**
$91K/yr · 213K searches
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
## **Is kuromi cup profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, kuromi cup is a $91K/yr Amazon United States market (213K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Dec. Verdict: Skip it — 47/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kuromi cup market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **4K–5K**
- avg 0–100/product
- **Revenue / yr**
- **$93K–$116K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#2,425**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **68%**
- **Out of stock**
- **33.9%**
- **Avg brand age**
- **24 months**
- **Avg seller age**
- **144 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**16 **▼falling
**Sellers**
**37**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**37%**
Top 20: 83%
**Open market**
**26%**
- Silver Buffalo20% - SANRIO17% - Bioworld12% - Fast Forward11% - Get Trend8% - Clwalny7%
## **kuromi cup demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.7% search growth over the last 90 days.
10K6KSpike '24Black Friday '24Holiday '24Prime Day '25Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/kuromi-cup/trend)
## **Top kuromi cup search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **kuromi water bottle**89K/yr+33.9%1.5% conv. - **kuromi cup**44K/yr-25.1%1.1% conv. - **kuromi tumbler**27K/yr-23.2%1.2% conv. - **kuromi water bottles for girls**15K/yr+38.2%1.1% conv. - **kuromi stanley cup**16K/yr-20.5%1.3% conv. - **kuromi cups**6K/yr-27.3%0.8% conv. - **kuromi travel mugs and tumblers**5K/yr-60.8%1.5% conv. - **kuromi bottle**5K/yr-2.5%1.3% conv. - **kuromi stanley**6K/yr-30.6%0.7% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/kuromi-cup/search-terms)
## **Top kuromi cup products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%$3K6%$5K9%$8K12%$11K1101001K10K100K1.0M 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**Silver Buffalo Sanrio Hello Kitty and Friends Kuromi Cherry Hearts Water Bottle with Screw-On Lid 28 Ounces**Silver Buffalo**$13.37**4.5★3,773 rev](https://www.amazon.com/dp/B0CF6N57R9) [2**Kuromi Purple All-Over Print 40 Oz Stainless Steel Tumbler With Handle**Bioworld**$24.26**4.6★457 rev](https://www.amazon.com/dp/B0F447ZZ25) [3**Fast Forward Sanrio Hello Kitty 40oz Stainless Steel Tumbler with Handle Lid & Straw (Purple Kuro)**Fast Forward**$19.30**4.2★125 rev](https://www.amazon.com/dp/B0FGB52FDN) [4**SANRIO Kuromi Stainless Steel Water Bottle for Girls - Bundle with 14 Oz Kuromi Drinking Cup For Home School and Sports Plus Stickers More Water Bottle with Straw**SANRIO**$17.51**4.2★55 rev](https://www.amazon.com/dp/B0F1CD8VNZ) [5**Clwalny Cartoon Huntrix Water Bottle for Girls 25oz Leak Proof with Straw Lid Gifts for Girls (Kuro)**Clwalny**$14.96**3.1★8 rev](https://www.amazon.com/dp/B0H1M9FT23)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SANRIO Kuromi Water Bottle for Girls - Bundle with 16 Oz Kuromi Drinking Cup with Straw and Carrying Strap for Home School Sports Plus Stickers Double Cover Reusable Water Bottle**SANRIO**$20.38**2 rev4mo ago](https://www.amazon.com/dp/B0GR75KYTP) [**Get Trend Hello Kitty Cinnamoroll 30oz Tumbler with Handle and Straw Kids Stainless Steel Insulated Water Bottle BPA-Free Leak-Proof Cold for 12h Hot 5h Kawaii Gifts for Girls (Blue Cinnamoroll)**Get Trend**$25.39**78 rev6mo ago](https://www.amazon.com/dp/B0G1TH7JLH) [**Clwalny Cartoon Huntrix Water Bottle for Girls 25oz Leak Proof with Straw Lid Gifts for Girls (Kuro)**Clwalny**$14.96**8 rev9mo ago](https://www.amazon.com/dp/B0H1M9FT23) [**My Melody & Kuromi Design Your Own Trendy Tumbler 20 oz. BPA-Free**Horizon Group USA**$15.37**124 rev10mo ago](https://www.amazon.com/dp/B0FQXL9MVD) [**SANRIO Kuromi Stainless Steel Water Bottle for Girls - Bundle with 16 Oz Kuromi Drinking Cup For Home School and Sports Plus More Double Walled Insulated Tumbler**SANRIO**$23.44**4 rev10mo ago](https://www.amazon.com/dp/B0FPY9BD42)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Clwalny Cartoon Huntrix Water Bottle for Girls 25oz Leak Proof with Straw Lid Gifts for Girls (Kuro)**Clwalny**$14.96**3.1★**▲ 309%**](https://www.amazon.com/dp/B0H1M9FT23) [**Get Trend Hello Kitty Cinnamoroll 30oz Tumbler with Handle and Straw Kids Stainless Steel Insulated Water Bottle BPA-Free Leak-Proof Cold for 12h Hot 5h Kawaii Gifts for Girls (Blue Cinnamoroll)**Get Trend**$25.39**4.3★**▲ 304%**](https://www.amazon.com/dp/B0G1TH7JLH) [**SANRIO Kuromi Water Bottle for Girls - Bundle with 16 Oz Kuromi Drinking Cup with Straw and Carrying Strap for Home School Sports Plus Stickers Double Cover Reusable Water Bottle**SANRIO**$20.38**5.0★**▲ 288%**](https://www.amazon.com/dp/B0GR75KYTP) [**Fast Forward Sanrio Hello Kitty and Friends Kuromi Backpack for Women Men Unisex | Cute PU Leather 10 Kuromi Mini Backpack Purse Shoulder Purse | Kuromi Bag and Kuromi Accessories**Fast Forward**$34.36**4.4★**▲ 259%**](https://www.amazon.com/dp/B0D9MJYTSZ) [**AI ACCESSORY INNOVATIONS Sanrios Kuromi 4 Piece Backpack Set Hello Kitty Kawaii Flip Sequin Girls School Bag with Front Zip Pocket 2 Side Mesh Pockets Black & Purple**AI ACCESSORY INNOVATIONS**$43.88**4.5★**▲ 93%**](https://www.amazon.com/dp/B0F3WF1DQ6)
**~~View all trending →~~**
## **What reviews say buyers love and hate about kuromi cup**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Good quality”*
**Temperature Retention**11%
*“keeps water cold”*
**Size-Overall**10%
*“Size is perfect”*
**Durability**9%
*“durable, which makes it seem high-quality and long-lasting”*
**Leak-Proof**8%
*“Leak Proof”*
**Color**7%
*“Beautiful Color”*
**Gifting Purpose**5%
*“Really cute gift”*
**Value For Money**4%
*“Its worth it”*
**Ease Of Cleaning**3%
*“Easy clean”*
**Advertised Vs Actual Product**3%
*“Does what it needs to do”*
### **What buyers complain about **
**Leak-Proof**11%
*“my bottle leaks”*
**Durability**10%
*“Poor durability”*
**Size-Overall**8%
*“It's not a tight fit like others I've bought”*
**Quality-Overall**8%
*“Cup is very cheaply made for price”*
**Value For Money**8%
*“A little expensive”*
**Handle Quality**4%
*“Broken handle”*
**Temperature Retention**4%
*“Items cold”*
**Product Condition**3%
*“Arrived with 2 scuff marks on it making it appear used”*
**Ease Of Use**3%
*“Hard to open”*
**Material Quality**2%
*“However, I feel that some of the materials could be a bit more durable”*
### **Top return reasons **
**Size-Overall**34%
**Color**20%
**Leak-Proof**10%
**Value For Money**6%
**Advertised Vs Actual Product**4%
**Product Condition**3%
**Functionality-Overall**2%
**Scratch Resistance**2%
**Smell**2%
**Weight Heavy**1%
## **Common kuromi cup questions**
- **Is kuromi cup profitable to sell on Amazon United States?**
- The niche generates $91K/yr across 44 tracked products. 4 of 10 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Skip it (47/100).
- **How competitive is the kuromi cup niche?**
- 16 brands and 37 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in kuromi cup?**
- Top complaints mined from reviews: Leak-Proof, Durability, Size-Overall. The return rate is 2.5%.
- **When does demand for kuromi cup peak?**
- Demand peaks in Dec; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the kuromi cup niche?**
- Listings span $9.46–$46.48; the average listing price is $23.20 (sweet spot $15–$100). The average incumbent carries 4,134 reviews — the moat a new listing must climb.
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