---
title: "Ninjamas Boys L/xl — $31K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/ninjamas-boys-l-xl"
last_updated: "2026-08-12T05:14:56.050Z"
locale: en
meta:
description: "Amazon product research for ninjamas boys l/xl: $31K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for ninjamas boys l/xl: $31K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Ninjamas Boys L/xl — $31K/mo Amazon US Product Research"
---
# **Ninjamas Boys L/xl**
**Worth a look**
Shows searches that convert (16.1% search→purchase), but brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list.
Market size 54Growth 37Conversion 98Competition 19Returns 97Price range 87Avg price 95Brand share 16Review moat 21Quality gap 37
**Conversion**
**Incredible****16.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$36.78**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.63–$62.14**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$374K**
$374K/yr · 63K searches
**Growth**
**Okay****+9.5%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****11,706**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
## **Is ninjamas boys l/xl profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, ninjamas boys l/xl is a $374K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Jan–Jun–Dec. Verdict: Worth a look — 51/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ninjamas boys l/xl market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **6K–8K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$221K–$294K**
- units × avg price
- **Conversion rate**
- **16.1%**
- **Avg BSR**
- **#70**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **134 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▲rising
**Sellers**
**21**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**3%**
- Ninjamas44% - Pampers15% - FUVVRVAL15% - GoodNites10% - TIICHOO9% - US Angels3% - Open — no brand owns it (1 brand, 3%)
## **ninjamas boys l/xl demand & seasonality**
Weekly Amazon search volume, last 87 weeks — +9.5% search growth over the last 90 days.
7K5KHoliday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Jan, Jun, Dec · busiest ÷ quietest = 6.2×
[**Open Trend **](https://flapen.com/research/us/health-household/ninjamas-boys-l-xl/trend)
## **Top ninjamas boys l/xl search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **ninjamas boys l/xl**26K/yr+12.1%20.2% conv. - **ninjamas boys lxl**13K/yr+40.3%0.0% conv. - **ninjamas boys xl**14K/yr-15.4%3.5% conv. - **ninjamas xl**8K/yr+1.3%4.9% conv. - **ninjamas large**2K/yr-16.5%6.7% conv. [**All search terms **](https://flapen.com/research/us/health-household/ninjamas-boys-l-xl/search-terms)
## **Top ninjamas boys l/xl 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%10%$37K20%$75K30%$112K40%$150K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Ninjamas Boys Bedwetting Nighttime Underwear Size L Pull Ups for Boys (64-95+ lbs) 68 Count Training Pants Overnight Underwear Kids Ultra Absorbent Hypoallergenic**Ninjamas**$49.41**4.5★13,581 rev](https://www.amazon.com/dp/B0B7V6WBKJ) [2**Ninjamas Boys Bedwetting Nighttime Underwear Size L (64-95+ lbs) 34 Count Overnight Protection Ultra Absorbent Hypoallergenic**Pampers**$26.69**4.5★13,581 rev](https://www.amazon.com/dp/B0886ZX14J) [3**Boys Incontinence Underwear Leakproof Daily & Nighttime Bedwetting Briefs**FUVVRVAL**$31.82**3.7★68 rev](https://www.amazon.com/dp/B0FJ8VP7VQ) [4**TIICHOO Incontinence Underwear for Children Washable Absorbent Boys Nighttime Underwear 5 Pack (Medium Black/Gray/Blue/Neon Green/Orange)**TIICHOO**$39.34**4.7★32 rev](https://www.amazon.com/dp/B0FWHS5XC5) [5**Goodnites Boys Nighttime Bedwetting Underwear Size Extra Large (95-120 lbs) 63 Ct (3 Packs of 21) Packaging May Vary**GoodNites**$59.40**4.8★28,362 rev](https://www.amazon.com/dp/B08QRB5ZK7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TIICHOO Washable Incontinence Underwear for Boys Cotton Reusable Boxer Briefs 5 Pack (Medium Black/Gray/Blue/Orange/Neon Green)**TIICHOO**$38.75**97 rev6mo ago](https://www.amazon.com/dp/B0GK6S6WRM) [**TIICHOO Incontinence Underwear for Children Washable Absorbent Boys Nighttime Underwear 5 Pack (Medium Black/Gray/Blue/Neon Green/Orange)**TIICHOO**$39.34**32 rev9mo ago](https://www.amazon.com/dp/B0FWHS5XC5) [**Boys Incontinence Underwear Leakproof Daily & Nighttime Bedwetting Briefs**FUVVRVAL**$31.82**68 rev10mo ago](https://www.amazon.com/dp/B0FJ8VP7VQ) [**Funnycokid Boys Pajamas Size 6 Summer Pjs Sets Sleepwear Loose Fit 2 Piece Ninja Gray Black Cool Soft Themed**Funnycokid**$16.40**58 rev1y ago](https://www.amazon.com/dp/B0FH6GBPK5) [**US Angels Boys Pajama Pants - 3 Pack Boys Sleepwear Breathable and Soft PJ Pants Pajama Bottoms for Teens Youths and Kids - Size 7 8 10-12 14-16**US Angels**$28.97**807 rev1y ago](https://www.amazon.com/dp/B0F8X187ST)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Funnycokid Boys Pajamas Size 6 Summer Pjs Sets Sleepwear Loose Fit 2 Piece Ninja Gray Black Cool Soft Themed**Funnycokid**$16.40**4.8★**▲ 227%**](https://www.amazon.com/dp/B0FH6GBPK5) [**TIICHOO Incontinence Underwear for Children Washable Absorbent Boys Nighttime Underwear 5 Pack (Medium Black/Gray/Blue/Neon Green/Orange)**TIICHOO**$39.34**4.7★**▲ 226%**](https://www.amazon.com/dp/B0FWHS5XC5) [**TIICHOO Washable Incontinence Underwear for Boys Cotton Reusable Boxer Briefs 5 Pack (Medium Black/Gray/Blue/Orange/Neon Green)**TIICHOO**$38.75**4.0★**▲ 218%**](https://www.amazon.com/dp/B0GK6S6WRM) [**US Angels Boys Pajama Pants - 3 Pack Boys Sleepwear Breathable and Soft PJ Pants Pajama Bottoms for Teens Youths and Kids - Size 7 8 10-12 14-16**US Angels**$28.97**4.7★**▲ 217%**](https://www.amazon.com/dp/B0F8X187ST) [**Boys Incontinence Underwear Leakproof Daily & Nighttime Bedwetting Briefs**FUVVRVAL**$31.82**3.7★**▲ 153%**](https://www.amazon.com/dp/B0FJ8VP7VQ)
**~~View all trending →~~**
## **What reviews say buyers love and hate about ninjamas boys l/xl**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**19%
*“Perfect fit”*
**Quality-Overall**13%
*“Great quality”*
**Comfort-Overall**11%
*“find them comfortable”*
**Leak-Proof**8%
*“no leaks”*
**Soft Feel**4%
*“Theyre soft enough for sleep”*
**Stress/Anxiety**4%
*“I suffer from stress incontinence and at 27 and male these are a live line for me I use them everyday for my medical issues”*
**Quick Drying**3%
*“Kept the bed dry so far”*
**Allergies**3%
*“I also like that theyre hypoallergenic”*
**Washability**3%
*“Saves us from having to wash bedding several times a week which is a huge win”*
**Absorbency**3%
*“Absorbency”*
### **What buyers complain about **
**Leak-Proof**29%
*“Does not stop leaks”*
**Size-Overall**12%
*“I was having a hard time finding a size that would fit my son”*
**Value For Money**6%
*“Its expensive”*
**Allergies**6%
*“Dont you understand people are allergic or irritated from that crap”*
**Functionality-Overall**4%
*“Didn't work”*
**Durability**4%
*“they ripped apart when putting them on my son”*
**Hard Feel**4%
*“made quite rough”*
**Smell**3%
*“Heavy perfume”*
**Quality-Overall**1%
*“Over priced and zero quality”*
**Comfort-Overall**1%
*“My kid always complained about the comfort of other brands”*
### **Top return reasons **
**Size-Overall**72%
**Leak-Proof**6%
**Advertised Vs Actual Product**4%
**Smell**4%
**Absorbency**3%
**Value For Money**2%
**Functionality-Overall**2%
**Age Suitability**2%
**Material Quality**1%
**Waist Fit**1%
## **Common ninjamas boys l/xl questions**
- **Is ninjamas boys l/xl profitable to sell on Amazon United States?**
- The niche generates $374K/yr across 12 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +9.5%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the ninjamas boys l/xl niche?**
- 7 brands and 21 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in ninjamas boys l/xl?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Value For Money. The return rate is 0.6%.
- **When does demand for ninjamas boys l/xl peak?**
- Demand peaks in Jan–Jun–Dec; the busiest month runs 6.2× the quietest.
- **What does it cost to enter the ninjamas boys l/xl niche?**
- Listings span $9.63–$62.14; the average listing price is $36.78 (sweet spot $15–$100). The average incumbent carries 11,706 reviews — the moat a new listing must climb.
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