Knee Surgery Shower Cover
Skip itHigh returns (6.2%) — this niche doesn't clear our bar today.
Conversion
Great8.9%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.40avg listing price — sweet spot $15–$100
Price range
Good$9.94–$24.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay78%top-5 brand share — brands hold most of the demand
Market size
Okay$156K$156K/yr · 101K searches
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Growth
Bad-1.9%90-day search growth — must beat 0% to launch
Review moat
Bad8,284.31avg incumbent reviews — the moat a new listing must climb
Returns
Bad6.2%return rate — above 5% kills the launch gate
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
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.No pronounced peak months · busiest ÷ quietest = 1.6×
Top knee surgery shower cover search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- waterproof knee cover for shower13K/yr
- knee cover for showering after surgery15K/yr
- knee shower protector after surgery15K/yr
- shower cover for knee surgery8K/yr
- knee surgery shower cover8K/yr
- knee cast cover for shower8K/yr
- shower knee cover waterproof4K/yr
- knee shower cover4K/yr
- shower cover for knee5K/yr
- knee cover for shower4K/yr
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.
All 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Asunby Knee Cast Cover for Shower Waterproof Bandage Cast covers Protector for Knee Replacement Surgery Wound Burns Watertight Protection Reusable
Asunby$16.814.5★5,476 rev
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$17.644.5★4,517 rev
COMFYTHERA Small Waterproof Cast Cover for Shower Knee Wound Protector Bath Adult Watertight Cast Bag Showering for Surgery Burns Reusable (D-Knee-S)
COMFYTHERA$15.494.4★2,500 rev
Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Covers- Shower Protector for Knee Replacement Surgery Wound Burns Reusable
Divvsck$16.114.5★675 rev
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$23.424.5★3,797 rev
Newest
by launch dateCOMFYTHERA Small Waterproof Cast Cover for Shower Knee Wound Protector Bath Adult Watertight Cast Bag Showering for Surgery Burns Reusable (D-Knee-S)
COMFYTHERA$15.492,500 rev
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$24.104,085 rev
Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (M)
Divvsck$15.50279 rev
Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (L)
Divvsck$15.50279 rev
CIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering Knee Surgery Recovery Equipment Waterproof Knee Brace Knee (Diameter - 7.9)
CIVJET$17.024,819 rev
Trending
90-day click momentumCIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering Knee Surgery Recovery Equipment Waterproof Knee Brace Knee (Diameter - 7.9)
CIVJET$17.024.4★
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$22.824.5★
Divvsck Waterproof Knee Cast Cover for Shower Watertight Cast Bag Reusable Shower Protector for Knee Replacement Surgery Wound Burns (M)
Divvsck$15.504.5★
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$24.104.6★
Asunby Knee Cast Cover for Shower Waterproof Bandage Cast covers Protector for Knee Replacement Surgery Wound Burns Watertight Protection Reusable
Asunby$16.814.5★
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
“Excellent product”
“effective”
“Ease of use”
“Definitely water proof”
“Staying dry”
“Worked as Described”
“fit snugly”
“did not leak”
“Great value”
“Durable and easy to use”
What buyers complain about
“Doesn't fit”
“Didn't last”
“not let any water in”
“Leaked slightly”
“Poor quality control”
“Hard to put on”
“Im completely dry after”
“To expensive”
“It didnt have as much stretch as I thought it would”
“It didn't have a foot pad to keep the patient from slipping”
Top return reasons
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.