---
title: "Knee Surgery Shower Cover — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/knee-surgery-shower-cover"
last_updated: "2026-08-12T15:44:38.661Z"
locale: en
meta:
description: "Amazon product research for knee surgery shower cover: $13K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for knee surgery shower cover: $13K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Knee Surgery Shower Cover — Amazon US Product Research"
---
# **Knee Surgery Shower Cover**
**Skip it**
High returns (6.2%) — this niche doesn't clear our bar today.
Market size 33Growth 24Conversion 83Competition 29Returns 21Price range 64Avg price 81Brand share 46Review moat 23Quality gap 47
**Conversion**
**Great****8.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.40**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$9.94–$24.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$156K**
$156K/yr · 101K searches
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-1.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****8,284.31**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Bad****6.2%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is knee surgery shower cover profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, knee surgery shower cover is a $156K/yr Amazon United States market (101K searches/yr). The top 5 brands hold 78% of demand. Verdict: Skip it — 41/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **knee surgery shower cover market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$139K–$174K**
- units × avg price
- **Conversion rate**
- **8.9%**
- **Avg BSR**
- **#33**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **3.2%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **166 days**
## **Competition: brands, sellers & click share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**15**
**Top-5 brand share**
**78%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**17%**
- Asunby27% - Zoyehoo21% - Divvsck16% - COMFYTHERA9% - YUNCHI6% - CIVJET5% - Open — no brand owns it (5 brands, 17%)
## **knee surgery shower cover demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.
2K2KSpike '24Spike '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/knee-surgery-shower-cover/trend)
## **Top knee surgery shower cover search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **waterproof knee cover for shower**13K/yr-0.3%7.6% conv. - **knee cover for showering after surgery**15K/yr+3.0%6.9% conv. - **knee shower protector after surgery**15K/yr-15.4%8.3% conv. - **shower cover for knee surgery**8K/yr+3.9%7.2% conv. - **knee surgery shower cover**8K/yr+3.7%6.9% conv. - **knee cast cover for shower**8K/yr+7.0%7.4% conv. - **shower knee cover waterproof**4K/yr+0.8%7.7% conv. - **knee shower cover**4K/yr+27.0%7.4% conv. - **shower cover for knee**5K/yr-5.4%4.3% conv. - **knee cover for shower**4K/yr+16.8%5.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/knee-surgery-shower-cover/search-terms)
## **Top knee surgery shower cover 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%$16K20%$31K30%$47K40%$63K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Asunby Knee Cast Cover for Shower Waterproof Bandage Cast covers Protector for Knee Replacement Surgery Wound Burns Watertight Protection Reusable**Asunby**$16.81**4.5★5,476 rev](https://www.amazon.com/dp/B082PRDXSZ) [2**Waterproof Knee Cover for Shower Adult After Surgery Upgraded Knee Surgery Shower Cover Watertight Cast Protector for Replacement Surgery Wound Burns Broken Soft Stretchy Reusable**Zoyehoo**$17.64**4.5★4,517 rev](https://www.amazon.com/dp/B0BFQH8TL9) [3**COMFYTHERA Small Waterproof Cast Cover for Shower Knee Wound Protector Bath Adult Watertight Cast Bag Showering for Surgery Burns Reusable (D-Knee-S)**COMFYTHERA**$15.49**4.4★2,500 rev](https://www.amazon.com/dp/B0DBHF5SY8) [4**Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Covers- Shower Protector for Knee Replacement Surgery Wound Burns Reusable**Divvsck**$16.11**4.5★675 rev](https://www.amazon.com/dp/B0BFDHMJM7) [5**YUNCHI Upgraded Extra Wide Full Leg Cast Cover for Shower after Knee Surgeries with Non-Slip Bottom for Leg Wounds Bandage Large Cast Knee Immobilizer/Brace Walking Boots Reusable**YUNCHI**$23.42**4.5★3,797 rev](https://www.amazon.com/dp/B0C9JL9JYP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**COMFYTHERA Small Waterproof Cast Cover for Shower Knee Wound Protector Bath Adult Watertight Cast Bag Showering for Surgery Burns Reusable (D-Knee-S)**COMFYTHERA**$15.49**2,500 rev1y ago](https://www.amazon.com/dp/B0DBHF5SY8) [**Waterproof Extra Wide Full Leg Cast Cover for Shower with Non-Slip Bottom Extra Large Watertight Leg Cast Protector for Thigh Foot Ankle Surgery Wounds Knee Immobilizer/Brace Walking Boots Reusable**DNEOUXI**$24.10**4,085 rev2y ago](https://www.amazon.com/dp/B0D7C3P81J) [**Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (M)**Divvsck**$15.50**279 rev2y ago](https://www.amazon.com/dp/B0D62GZBBD) [**Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (L)**Divvsck**$15.50**279 rev2y ago](https://www.amazon.com/dp/B0D62KZYLC) [**CIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering Knee Surgery Recovery Equipment Waterproof Knee Brace Knee (Diameter - 7.9)**CIVJET**$17.02**4,819 rev2y ago](https://www.amazon.com/dp/B0CYLV392S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**CIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering Knee Surgery Recovery Equipment Waterproof Knee Brace Knee (Diameter - 7.9)**CIVJET**$17.02**4.4★**▲ 184%**](https://www.amazon.com/dp/B0CYLV392S) [**ZhiGu Adult Knee Cast Cover Shower Extra Large Long Waterproof Knee Surgery Shower Cover Watertight Shower Bandage and Wound Protector for Knee Replacement and ACL Surgery (Extra Large 70cm)**ZhiGu**$22.82**4.5★**▲ 129%**](https://www.amazon.com/dp/B0BZCG2L31) [**Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (M)**Divvsck**$15.50**4.5★**▲ 43%**](https://www.amazon.com/dp/B0D62GZBBD) [**Waterproof Extra Wide Full Leg Cast Cover for Shower with Non-Slip Bottom Extra Large Watertight Leg Cast Protector for Thigh Foot Ankle Surgery Wounds Knee Immobilizer/Brace Walking Boots Reusable**DNEOUXI**$24.10**4.6★**— 9%**](https://www.amazon.com/dp/B0D7C3P81J) [**Asunby Knee Cast Cover for Shower Waterproof Bandage Cast covers Protector for Knee Replacement Surgery Wound Burns Watertight Protection Reusable**Asunby**$16.81**4.5★**— 9%**](https://www.amazon.com/dp/B082PRDXSZ)
**~~View all trending →~~**
## **What reviews say buyers love and hate about knee surgery shower cover**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**12%
*“Excellent product”*
**Efficiency**11%
*“effective”*
**Ease Of Use**10%
*“Ease of use”*
**Water Resistance**9%
*“Definitely water proof”*
**Moist/Dry**8%
*“Staying dry”*
**Advertised Vs Actual Product**8%
*“Worked as Described”*
**Size-Overall**7%
*“fit snugly”*
**Leak-Proof**6%
*“did not leak”*
**Value For Money**4%
*“Great value”*
**Durability**4%
*“Durable and easy to use”*
### **What buyers complain about **
**Size-Overall**22%
*“Doesn't fit”*
**Durability**10%
*“Didn't last”*
**Water Resistance**9%
*“not let any water in”*
**Leak-Proof**6%
*“Leaked slightly”*
**Quality-Overall**6%
*“Poor quality control”*
**Ease Of Use**4%
*“Hard to put on”*
**Moist/Dry**3%
*“Im completely dry after”*
**Value For Money**2%
*“To expensive”*
**Stretchability/Expandability/Elasticity**2%
*“It didnt have as much stretch as I thought it would”*
**Grip**2%
*“It didn't have a foot pad to keep the patient from slipping”*
### **Top return reasons **
**Size-Overall**49%
**Advertised Vs Actual Product**11%
**Joint Pain**7%
**Water Resistance**6%
**Leak-Proof**4%
**Functionality-Overall**4%
**Material Quality**3%
**Stretchability/Expandability/Elasticity**2%
**Product Condition**2%
**Durability**2%
## **Common knee surgery shower cover questions**
- **Is knee surgery shower cover profitable to sell on Amazon United States?**
- The niche generates $156K/yr across 16 tracked products. 90-day search growth is -1.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the knee surgery shower cover niche?**
- 11 brands and 15 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in knee surgery shower cover?**
- Top complaints mined from reviews: Size-Overall, Durability, Water Resistance. The return rate is 6.2% — above our launch gate.
- **When does demand for knee surgery shower cover peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the knee surgery shower cover niche?**
- Listings span $9.94–$24.10; the average listing price is $17.40 (sweet spot $15–$100). The average incumbent carries 8,284 reviews — the moat a new listing must climb.
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