---
title: "Cast Cover — $463K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/cast-cover"
last_updated: "2026-08-10T22:25:26.972Z"
locale: en
meta:
description: "Niche score 51/100 · $463K/yr market · 427K searches/yr. A deep review moat (8,872 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $463K/yr market · 427K searches/yr. A deep review moat (8,872 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Cast Cover — $463K/yr Amazon US Niche (2026) - Flapen"
---
# **cast cover**
**Worth a look**
Shows a sweet-spot price point ($18.43 avg), but a deep review moat (8,872 avg reviews) keeps it on the watch list.
Market size 58Growth 75Conversion 66Competition 31Returns 23Price range 79Avg price 84Brand share 38Review moat 22Quality gap 43
**Avg price**
**Great****$18.43**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.88–$34.93**
cheapest 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**
**Good****5.9%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$463K**
$463K/yr · 427K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Bad****5.6%**
return rate — above 5% kills the launch gate
**Review moat**
**Bad****8,872.29**
avg incumbent reviews — the moat a new listing must climb
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
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 ~~](https://flapen.com/research/methodology)
## **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.
15K10KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Sep · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/health-household/cast-cover/trend)
## **Top cast cover search terms**
- **cast cover**146K/yr+31.7%5.0% conv. - **waterproof cast cover**52K/yr+78.8%5.9% conv. - **cast cover for swimming**22K/yr+831.2%2.9% conv. - **cast covers**33K/yr+31.8%3.7% conv. - **bath & shower cast & wound covers**25K/yr+13.4%3.4% conv. - **cast cover for shower**30K/yr-0.5%7.8% conv. - **cast protector**23K/yr+21.6%4.1% conv. - **cast covers for shower**13K/yr+67.1%5.9% conv. - **cast bag**14K/yr+24.1%9.5% conv. - **arm cast cover for swimming**7K/yr+951.1%4.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/cast-cover/search-terms)
## **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.
0%10%$46K20%$93K30%$139K40%$185K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**CastCoverz! Designer Arm Cast Cover - Black - Large Short: 13 Length X 13 Circumference - Removable and Washable - Made in USA**CastCoverz!**$20.93**4.2★1,285 rev](https://www.amazon.com/dp/B01HFX7L9C) [2**100% Waterproof Cast Covers for Shower Arm - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves**Mighty-X**$9.97**4.4★46,385 rev](https://www.amazon.com/dp/B078Q7WJSG) [3**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**$10.08**4.7★2,141 rev](https://www.amazon.com/dp/B0DSL9WTP9) [4**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**$34.93**4.5★5,769 rev](https://www.amazon.com/dp/B007UONMJU) [5**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**$17.99**4.4★4,819 rev](https://www.amazon.com/dp/B0CQ4YH3C8)
**~~View all top sellers →~~**
### **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**$14.62**282 rev7mo ago](https://www.amazon.com/dp/B0G39PL594) [**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**$13.30**776 rev1y ago](https://www.amazon.com/dp/B0F948YG9Y) [**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**$9.88**563 rev1y ago](https://www.amazon.com/dp/B0DZCTFVMD) [**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**$10.08**2,141 rev1y ago](https://www.amazon.com/dp/B0DSL9WTP9) [**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**$17.99**4,819 rev2y ago](https://www.amazon.com/dp/B0CQ4YH3C8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$13.30**4.4★**▲ 92%**](https://www.amazon.com/dp/B0F948YG9Y) [**100% Waterproof Cast Covers for Shower Arm - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves**Mighty-X**$9.97**4.4★**▲ 72%**](https://www.amazon.com/dp/B078Q7WJSG) [**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**$14.62**4.7★**▲ 59%**](https://www.amazon.com/dp/B0G39PL594) [**CastCoverz! Designer Arm Cast Cover - Black - Large Short: 13 Length X 13 Circumference - Removable and Washable - Made in USA**CastCoverz!**$20.93**4.2★**▲ 48%**](https://www.amazon.com/dp/B01HFX7L9C) [**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**$10.08**4.7★**▲ 38%**](https://www.amazon.com/dp/B0DSL9WTP9)
**~~View all trending →~~**
## **What buyers say about cast cover**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Water Resistance**13%
*“Waterproof Cast cover”*
**Ease Of Use**11%
*“Convenient to use”*
**Quality-Overall**10%
*“Great cover”*
**Efficiency**10%
*“Works beautifully”*
**Moist/Dry**8%
*“Keeps everything dry”*
**Advertised Vs Actual Product**7%
*“Exactly as advertised”*
**Leak-Proof**7%
*“Did not leak”*
**Size-Overall**7%
*“Fits all”*
**Value For Money**5%
*“Money well spent”*
**Durability**3%
*“Durable and easy to use”*
### **What buyers complain about **
**Size-Overall**20%
*“Didnt fit”*
**Durability**10%
*“Did not last”*
**Water Resistance**9%
*“Not water proof”*
**Leak-Proof**6%
*“leaked”*
**Ease Of Use**6%
*“Difficult to use”*
**Quality-Overall**4%
*“Not as high a quality as expected”*
**Moist/Dry**3%
*“Getting wet”*
**Pain Relief-Overall**2%
*“What a pain”*
**Functionality-Overall**2%
*“Doesnt work great”*
**Stretchability/Expandability/Elasticity**2%
*“does not stretch”*
### **Top return reasons **
**Size-Overall**58%
**Advertised Vs Actual Product**9%
**Water Resistance**6%
**Leak-Proof**5%
**Material Quality**4%
**Functionality-Overall**3%
**Durability**2%
**Ease Of Use**2%
**Joint Pain**1%
**Stretchability/Expandability/Elasticity**1%
## **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.
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