Is waterproof kindle case profitable to sell on Amazon United States?

The niche generates $32K/yr across 9 tracked products. 90-day search growth is +245.1%. Flapen's verdict: Skip it (33/100).

How competitive is the waterproof kindle case niche?

5 brands and 9 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in waterproof kindle case?

Top complaints mined from reviews: Water Resistance, Ease Of Use, Value For Money. The return rate is 5.2% — above our launch gate.

When does demand for waterproof kindle case peak?

Demand peaks in Jun–Jul; the busiest month runs 9.2× the quietest.

What does it cost to enter the waterproof kindle case niche?

Listings span $9.90–$14.98; the average listing price is $12.89 (sweet spot $15–$100). The average incumbent carries 2,242 reviews — the moat a new listing must climb.

waterproof kindle case

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Growth

Incredible+245.1%

90-day search growth — must beat 0% to launch

Avg price

Good$12.89

avg listing price — sweet spot $15–$100

Review moat

Okay2,241.78

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Okay2.9%

search→purchase rate — share of searches ending in a sale

Returns

Bad5.2%

return rate — above 5% kills the launch gate

Competition

Bad86%

top-5 click share — a locked-up shelf

Market size

Bad$32K

$32K/yr · 85K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

Price range

Bad$9.90–$14.98

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals Trending High Returns

According to Flapen's Amazon United States niche tracking, waterproof kindle case is a $32K/yr Amazon United States market (85K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jun–Jul. Verdict: Skip it — 33/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

waterproof kindle case market data

Units sold / yr: 2K–3K; avg 100–250/product
Revenue / yr: $26K–$32K; units × avg price
Conversion rate: 2.9%
Avg BSR: #269
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 1.2%
Avg brand age: 39 months
Avg seller age: 206 days

Competition & brand share

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

86%

Top 20: 100%

Open market

WALNEW50%
EMSEEK28%
YUMQUA10%
DRLOKPAK7%
MoKo5%

Demand & seasonality

Weekly Amazon search volume, last 55 weeks — +245.1% search growth over the last 90 days.

Peak months: Jun, Jul · busiest ÷ quietest = 9.2×

Open Trend

Top waterproof kindle case search terms

waterproof kindle case34K/yr +259.6%2.4% conv.
kindle waterproof case22K/yr +242.4%2.3% conv.
waterproof kindle pouch7K/yr +302.8%2.8% conv.
kindle paperwhite waterproof case7K/yr +181.6%2.1% conv.
waterproof kindle paperwhite case6K/yr +176.6%2.0% conv.
kindle waterproof pouch5K/yr +382.8%3.3% conv.
water proof kindle case4K/yr +187.4%1.7% conv.

All search terms

Top waterproof kindle case 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

WALNEW Universal Waterproof eReader Protective Case Cover for Colorsoft Signature Edition/7/6.8Kindle Paperwhite /6 Kindle 2024/Oasis/Fire 7 iPad mini Kobo Clara/Nia and More Blue

WALNEW$14.984.4★1,133 rev

EMSEEK Waterproof Ebook Reader Case Holder Tablet Cover Bag eReader Dry Pouch for Amazon Kindle Paperwhite Oasis Fire 7 Nook Kobo iPad mini Samsung Tab Google Nexus Up to 8.5 (Pink)

EMSEEK$13.174.6★176 rev

EMSEEK Waterproof Waist Pouch Dry Belt Bag Fanny Pack Keep Your Key Fob Wallet Kindle Phone Dry Perfect For Swim Surf Snorkel(Light Green)

EMSEEK$13.714.5★380 rev

YUMQUA Clear Waterproof Bag Waterproof Document Pouch Passport Holder Water Tight Map Case Waterproof Pouch Water Proof Small Dry Bags for Kindle Phone Tablet Camera Kayak Boat PaddleBoard

YUMQUA$9.904.5★3,802 rev

WALNEW Universal Waterproof eReader Protective Case Cover for Kindle Colorsoft Signature Edition/7/6.8/6 Kindle 2024/Oasis/Kindle Fire 7 iPad Mini Kobo Clara/Nia and More Lightblue

WALNEW$14.804.4★1,133 rev

Newest

by launch date

DRLOKPAK Waterproof eReader Case Cover Tablet Holder Floating Dry Bag Pouch for Kindle Paper White Oasis Fire 7 HD 8 Nook HD 9 Kobo Libra 2 iPad mini Tab 7 Nexus 7

DRLOKPAK$13.06138 rev

2y ago

EMSEEK Waterproof Ebook Reader Case Holder Tablet Cover Bag eReader Dry Pouch for Amazon Kindle Paperwhite Oasis Fire 7 Nook Kobo iPad mini Samsung Tab Google Nexus Up to 8.5 (Pink)

EMSEEK$13.17176 rev

3y ago

EMSEEK Waterproof Ebook Reader Case Holder Tablet Cover Bag eReader Dry Pouch for Amazon Kindle Paperwhite Oasis Fire 7 Nook Kobo iPad mini Samsung Tab Google Nexus Up to 8.5(Blue)

EMSEEK$13.85176 rev

3y ago

MoKo Case for 7/6.8 Kindle Paperwhite(12th/11th Generation-2024/2021) and Kindle Colorsoft Signature Edition Slim PU Shell Cover Case with Auto-Wake/Sleep for Kindle Paperwhite 2024 Flowers

MoKo$11.7911,874 rev

4y ago

EMSEEK Waterproof Waist Pouch Dry Belt Bag Fanny Pack Keep Your Key Fob Wallet Kindle Phone Dry Perfect For Swim Surf Snorkel(Light Green)

EMSEEK$13.71380 rev

4y ago

What buyers say about waterproof kindle case

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall22%

“Very very well made”

Size-Overall17%

“Fits a kindle paperwhite perfectly”

Water Resistance17%

“It's waterproof IF you are able to get it to ziplock”

Comfort-Overall11%

“Sooo, comfortable”

Ease Of Use6%

“Easy to wear”

Durability6%

“Looks durable”

Advertised Vs Actual Product6%

“As described and good quality”

Compatibility-Overall6%

“Kindle friendly”

What buyers complain about

Water Resistance33%

“product arrived with perforated holes along the bottom that let water in”

Ease Of Use25%

“hard to open”

Value For Money8%

“Way too costly”

Size-Overall8%

“too big”

Durability8%

“The plastic rips after a few month”

Top return reasons

Size-Overall50%

Ease Of Use6%

Advertised Vs Actual Product6%

Material Quality5%

Compatibility-Overall5%

Functionality-Overall4%

Water Resistance3%

Quality-Overall3%

Defective Material/Parts3%

Color3%

Common questions

Is waterproof kindle case profitable to sell on Amazon United States?: The niche generates $32K/yr across 9 tracked products. 90-day search growth is +245.1%. Flapen's verdict: Skip it (33/100).
How competitive is the waterproof kindle case niche?: 5 brands and 9 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in waterproof kindle case?: Top complaints mined from reviews: Water Resistance, Ease Of Use, Value For Money. The return rate is 5.2% — above our launch gate.
When does demand for waterproof kindle case peak?: Demand peaks in Jun–Jul; the busiest month runs 9.2× the quietest.
What does it cost to enter the waterproof kindle case niche?: Listings span $9.90–$14.98; the average listing price is $12.89 (sweet spot $15–$100). The average incumbent carries 2,242 reviews — the moat a new listing must climb.