cast protectors
Skip itPrices mostly outside the sweet spot ($2.85–$11.55) — this niche doesn't clear our bar today.
Conversion
Great10.6%search→purchase rate — share of searches ending in a sale
Returns
Great1.6%return rate — above 5% kills the launch gate
Growth
Good+41.6%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Market size
Okay£130K£130K/yr · 160K searches
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Review moat
Bad7,301.47avg incumbent reviews — the moat a new listing must climb
Avg price
Bad£7.69avg listing price — sweet spot $15–$100
Price range
Bad£2.85–£11.55cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, cast protectors is a £130K/yr Amazon United Kingdom market (160K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Jul. Verdict: Skip it — 46/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
cast protectors market data
- Units sold / yr
- 15K–20K
- avg 750–1,000/product
- Revenue / yr
- £115K–£154K
- units × avg price
- Conversion rate
- 10.6%
- Avg BSR
- #8
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 29 months
- Avg seller age
- 191 days
Competition & brand share
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
18
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
69%
Top 20: 100%
Open market
15%
- Mighty-X32%
- Fasola19%
- EuyiHlybt11%
- CureSquad9%
- Box Commerce8%
- Atan6%
- Open — no brand owns it (6 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +41.6% search growth over the last 90 days.Peak months: Jul · busiest ÷ quietest = 1.7×
Top cast protectors search terms
- cast cover waterproof21K/yr
- waterproof cast cover arm17K/yr
- waterproof arm cover for shower19K/yr
- cast cover12K/yr
- plaster cast waterproof cover arm13K/yr
- arm cast cover for shower11K/yr
- waterproof arm cast cover8K/yr
- cast protector arm waterproof6K/yr
- arm cast cover6K/yr
- waterproof cast cover6K/yr
Top cast protectors 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
100% Waterproof Arm Cover for Shower - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves for Wounds Care - After Surgery Plaster Cast Cover for Hand Wrist Elbow Forearm
Mighty-X£8.174.4★44,937 rev
Fasola Cast Cover Arm for Showering Reusable Cast Dressing and Bandage Protector Watertight Protection for Short Arm Elbow Wrist Hand FInger
Fasola£7.524.6★4,817 rev
CureSquad Waterproof Arm Cast Cover Reusable Plaster Cast Protector Soft Comfortable Sleeve for Shower & Swimming Keep Bandage Dry
CureSquad£7.724.6★1,809 rev
Box Commerce Adult Arm Cast Protector for Showering Swimming - Comfortable Soft Silicone Waterproof Cover for Bandages Casts Wounds Burns - Reusable Waterproof Bag - 6 cm ring
Box Commerce£6.324.5★1,468 rev
EuyiHlybt Cast Cover for Shower Arm Cast Protector Arm Waterproof Cast Cover Soft Comfortable Plaster Cast Waterproof Cover for Bandages Dressings Wound Care Supplies etc.
EuyiHlybt£7.694.6★2,214 rev
Newest
by launch dateBox Commerce Adult Arm Cast Protector for Showering Swimming - Comfortable Soft Silicone Waterproof Cover for Bandages Casts Wounds Burns - Reusable Waterproof Bag - 6 cm ring
Box Commerce£6.321,468 rev
Waterproof Cast Cover Arm Reusable Silicone Adult Plaster Cast Waterproof Cover Arm for Shower Protect Wrist Elbow Wound Bandages Burns & Surgeries Comfortable & Easy to Use One Size Fits Most
Atan£7.5999 rev
ANOMM Waterproof Arm Cast Cover for Shower Reusable Adult Arm Cover Soft & Comfortable Cast Protectors for Hand Wrist Elbow Watertight Seal Cast Bag for Bandages Dressings Wound Care Supplies
ANOMM£5.95519 rev
EuyiHlybt Plaster Cast Waterproof Cover Arm Soft Comfortable Cast Cover for Shower Arm Reusable Cast Protector Waterproof Cast Cover for Bandages and Dressings Tattoo Wound Care Supplies
EuyiHlybt£7.79639 rev
EuyiHlybt Cast Cover for Shower Arm Cast Protector Arm Waterproof Cast Cover Soft Comfortable Plaster Cast Waterproof Cover for Bandages Dressings Wound Care Supplies etc.
EuyiHlybt£7.692,214 rev
Trending
90-day click momentum
100% Waterproof Arm Cover for Shower - Tight Seal - 2pk Adult Reusable Cast Protectors - Full Arm Bag Sleeves for Wounds Care - After Surgery Plaster Cast Cover for Hand Wrist Elbow Forearm
Mighty-X£10.384.4★
100% Waterproof Arm Cover for Shower - Tight Seal - 3pk Adult Reusable Cast Protectors - Half Arm Bag Sleeves for Wounds Care - After Surgery Plaster Cast Cover for Hand Wrist Elbow Forearm
Mighty-X£8.174.4★
Box Commerce Adult Arm Cast Protector for Showering Swimming - Comfortable Soft Silicone Waterproof Cover for Bandages Casts Wounds Burns - Reusable Waterproof Bag - 6 cm ring
Box Commerce£6.324.5★
ACAST Waterproof Arm Cast Cover For Shower - Easy To Use Reusable Waterproof Protector For Hand Finger Wrist Wounds Plaster Arm Dressing Protector - Free E-book Included
ACAST£11.554.4★
Fasola Cast Cover Arm for Showering Reusable Cast Dressing and Bandage Protector Watertight Protection for Short Arm Elbow Wrist Hand FInger
Fasola£7.524.6★
What buyers say about cast protectors
What buyers praise and complain about, mined from review topics.What buyers love
“well made item”
“Brilliantly waterproof”
“Really worked as promised”
“it fits all sizes”
“Easy to use”
“Good value for money”
“Does work”
“did not leak”
“Robust construction”
“very comfortable”
What buyers complain about
“Too narrow”
“A: very hard to put on”
“Opening very tight making it watertight”
“Mg sleeve split with in first week”
“Just leaked”
“Doesnt work”
“the silicon cuff is tight and very uncomfortable”
“Its too much pressure to get my short arm into waterproof sleeve”
“They look cheap”
“This is a very false description I would think that you could use it for a broken leg as it is massive making it totally useless”
Top return reasons
Common questions
- Is cast protectors profitable to sell on Amazon United Kingdom?
- The niche generates £130K/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +41.6%. Flapen's verdict: Skip it (46/100).
- How competitive is the cast protectors niche?
- 12 brands and 18 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in cast protectors?
- Top complaints mined from reviews: Size-Overall, Ease Of Use, Water Resistance. The return rate is 1.6%.
- When does demand for cast protectors peak?
- Demand peaks in Jul; the busiest month runs 1.7× the quietest.
- What does it cost to enter the cast protectors niche?
- Listings span £2.85–£11.55; the average listing price is £7.69 (sweet spot $15–$100). The average incumbent carries 7,301 reviews — the moat a new listing must climb.