Who makes Ninjamas? Amazon sales, products and sellers
Updated November 2026 with September 2026 data
At a glance
- Size
- Large
- $1.9M est./mo
- Trend
- Growing
- +31%, last 2 vs prior 2 months
- Ratings
- Strong
- 4.5 ★ · 21,553 reviews
- Who sells it
- Mostly one seller
- Top seller has 100% of units
Ninjamas estimated monthly revenue on Amazon
Our read on Ninjamas
Ninjamas is a large brand in Protective Briefs & Underwear, ranking 6 among 118 brands in that category with a 3% share of its revenue. In September 2026 it had estimated revenue of $1.9M and 54,000 estimated units, up 15% from $1.7M in June 2026. The trend is labeled Growing, with a +31% change over the last 2 months. It has 11 products selling, led by the Boys Bedwetting Nighttime Underwear in S/M at 8,800 estimated units per month. The brand holds an average rating of 4.5 across 21,553 reviews, which falls in the Strong band. One seller, Amazon, accounts for 100% of units. These figures cover 4 months of data.
Top Ninjamas products on Amazon
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| Product | Rating | Est. units/mo | Amazon link |
|---|---|---|---|
| Ninjamas Boys Bedwetting Nighttime Underwear, S/M (38-70 lbs) | 4.4 ★13,486 reviews | 8,800 | Check price on Amazon |
| Ninjamas Boys Bedwetting Nighttime Underwear, Size L (64-95+ | 4.4 ★13,499 reviews | 8,400 | Check price on Amazon |
| Ninjamas Girls Bedwetting Nighttime Underwear, S/M (38-70 lbs) | 4.6 ★8,067 reviews | 4,300 | Check price on Amazon |
| Ninjamas Girls Bedwetting Nighttime Underwear, L (64-95+ lbs) | 4.6 ★8,070 reviews | 3,300 | Check price on Amazon |
Who sells Ninjamas
- Amazon100%
Share of estimated units sold in September 2026, by the seller holding the Buy Box.
Place in its category
#6 of 118
Rank 6 of 118 brands in Protective Briefs & Underwear by estimated revenue in September 2026, with 3% of the category.
Frequently asked questions
Who makes Ninjamas?
Ninjamas is the brand name on 11 products we tracked on Amazon in September 2026 mostly in Protective Briefs & Underwear (Health & Household). The largest seller of Ninjamas products that month was Amazon, with 100% of estimated units. Amazon listings don't show the brand owner's legal name, so the brand's own website is the place to confirm its parent company.
How much does Ninjamas sell on Amazon?
Ninjamas sold an estimated $1.9M on Amazon in September 2026, about 54,000 units. That is +15% compared with June 2026. These are Ecominsights estimates, not figures reported by the brand.
What are Ninjamas's best-selling products on Amazon?
By estimated units sold in September 2026: 1. Ninjamas Boys Bedwetting Nighttime Underwear, S/M (38-70 lbs) (about 8,800 units); 2. Ninjamas Boys Bedwetting Nighttime Underwear, Size L (64-95+ (about 8,400 units); 3. Ninjamas Girls Bedwetting Nighttime Underwear, S/M (38-70 lbs) (about 4,300 units).