cast cover
Worth a lookShows a sweet-spot price point ($18.43 avg), but a deep review moat (8,872 avg reviews) keeps it on the watch list.
Avg price
Great$18.43avg listing price — sweet spot $15–$100
Price range
Great$9.88–$34.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+60.3%90-day search growth — must beat 0% to launch
Conversion
Good5.9%search→purchase rate — share of searches ending in a sale
Market size
Good$463K$463K/yr · 427K searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Returns
Bad5.6%return rate — above 5% kills the launch gate
Review moat
Bad8,872.29avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, cast cover is a $463K/yr Amazon United States market (427K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Jun–Jul–Sep. Verdict: Worth a look — 51/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
cast cover market data
- Units sold / yr
- 30K–40K
- avg 750–1,000/product
- Revenue / yr
- $553K–$737K
- units × avg price
- Conversion rate
- 5.9%
- Avg BSR
- #162
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.2%
- Avg brand age
- 47 months
- Avg seller age
- 160 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
15
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
13%
- CastCoverz!21%
- Mighty-X20%
- BLOCCS16%
- EuyiHlybt14%
- CIVJET12%
- CureSquad5%
- Open — no brand owns it (5 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +60.3% search growth over the last 90 days.Peak months: Jun, Jul, Sep · busiest ÷ quietest = 2.0×
Top cast cover search terms
- cast cover146K/yr
- waterproof cast cover52K/yr
- cast cover for swimming22K/yr
- cast covers33K/yr
- bath & shower cast & wound covers25K/yr
- cast cover for shower30K/yr
- cast protector23K/yr
- cast covers for shower13K/yr
- cast bag14K/yr
- arm cast cover for swimming7K/yr
Top cast cover 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.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CastCoverz! Designer Arm Cast Cover - Black - Large Short: 13 Length X 13 Circumference - Removable and Washable - Made in USA
CastCoverz!$20.934.2★1,285 rev
100% Waterproof Cast Covers for Shower Arm - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves
Mighty-X$9.974.4★46,385 rev
EuyiHlybt Cast Covers for Shower Arm Waterproof Arm Cast Covers for Shower Adult Reusable Cast Shower Cover Arm Comfortable Cast Protector for Shower Arm Adult Cast Bag for Bandages Dressings
EuyiHlybt$10.084.7★2,141 rev
BLOCCS 100% Waterproof Cast Covers for Shower Arm Kids- Swim Cover Cast Bag for Bath. Durable Cast Sleeve for Swimming - #CA79-M - Child Arm (Medium)
BLOCCS$34.934.5★5,769 rev
CIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering/Swimming Cast Protector for Shower Leg Adult Water Proof Shower Boots for Foot after Surgery Knee Ankle Boot (Diameter-7.9)
CIVJET$17.994.4★4,819 rev
Newest
by launch date
EuyiHlybt Cast Covers for Shower Leg Waterproof Leg Cast Cover for Showering Reusable Cast Protector for Shower Leg Adult Soft Comfortable Cast Shower Cover Leg Used for Bandages
EuyiHlybt$14.62282 rev
Quiheat Waterproof Leg Cast Cover for Showering Reusable Shower Sleeve for Leg After Surgery Watertight Non-Slip Adult Fracture Protector Bag Watertight Adult Cast Protector for Calf/Ankle/Wound/Bandages
quiheat$13.30776 rev
Waterproof Cast Covers for Shower Arm Kids Water Proof Plastic Sleeve to Cover Arms After Surgery/Wound/Fracture/Bandage/Fingers Sleeves Protector Bag Youth/Toddler Showering Child in Bath Small
mosago$9.88563 rev
EuyiHlybt Cast Covers for Shower Arm Waterproof Arm Cast Covers for Shower Adult Reusable Cast Shower Cover Arm Comfortable Cast Protector for Shower Arm Adult Cast Bag for Bandages Dressings
EuyiHlybt$10.082,141 rev
CIVJET Cast Covers for Shower Leg Waterproof Cast Cover for Showering/Swimming Cast Protector for Shower Leg Adult Water Proof Shower Boots for Foot after Surgery Knee Ankle Boot (Diameter-7.9)
CIVJET$17.994,819 rev
Trending
90-day click momentumQuiheat Waterproof Leg Cast Cover for Showering Reusable Shower Sleeve for Leg After Surgery Watertight Non-Slip Adult Fracture Protector Bag Watertight Adult Cast Protector for Calf/Ankle/Wound/Bandages
quiheat$13.304.4★
100% Waterproof Cast Covers for Shower Arm - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves
Mighty-X$9.974.4★
EuyiHlybt Cast Covers for Shower Leg Waterproof Leg Cast Cover for Showering Reusable Cast Protector for Shower Leg Adult Soft Comfortable Cast Shower Cover Leg Used for Bandages
EuyiHlybt$14.624.7★
CastCoverz! Designer Arm Cast Cover - Black - Large Short: 13 Length X 13 Circumference - Removable and Washable - Made in USA
CastCoverz!$20.934.2★
EuyiHlybt Cast Covers for Shower Arm Waterproof Arm Cast Covers for Shower Adult Reusable Cast Shower Cover Arm Comfortable Cast Protector for Shower Arm Adult Cast Bag for Bandages Dressings
EuyiHlybt$10.084.7★
What buyers say about cast cover
What buyers praise and complain about, mined from review topics.What buyers love
“Waterproof Cast cover”
“Convenient to use”
“Great cover”
“Works beautifully”
“Keeps everything dry”
“Exactly as advertised”
“Did not leak”
“Fits all”
“Money well spent”
“Durable and easy to use”
What buyers complain about
“Didnt fit”
“Did not last”
“Not water proof”
“leaked”
“Difficult to use”
“Not as high a quality as expected”
“Getting wet”
“What a pain”
“Doesnt work great”
“does not stretch”
Top return reasons
Common questions
- Is cast cover profitable to sell on Amazon United States?
- The niche generates $463K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +60.3%. Flapen's verdict: Worth a look (51/100).
- How competitive is the cast cover niche?
- 11 brands and 15 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in cast cover?
- Top complaints mined from reviews: Size-Overall, Durability, Water Resistance. The return rate is 5.6% — above our launch gate.
- When does demand for cast cover peak?
- Demand peaks in Jun–Jul–Sep; the busiest month runs 2.0× the quietest.
- What does it cost to enter the cast cover niche?
- Listings span $9.88–$34.93; the average listing price is $18.43 (sweet spot $15–$100). The average incumbent carries 8,872 reviews — the moat a new listing must climb.