A tub left uncovered through winter collects leaves and snow, and the water underneath turns before the next soak. A cover that fits the tub and stays put in wind is the fix, and this roundup scores covers for the best hot tub cover under 75 search on what each listing states.
This roundup scores 5 covers that sit over a tub or float on the water, on stated size, fit, fabric, vents, closure and warranty. Listings were collected 28 October 2026; listings change.
This article is informational and is not medical advice. Hot water immersion strains the heart. Speak to a doctor first if you have a heart condition, high blood pressure, or are pregnant. See our Medical Disclaimer.
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Quick picks
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1
ULTCOVER Waterproof Square Hot Tub SPA Cover 95 Chill Score 9.7/10Check price on AmazonA 95 inch square cover in 600D polyester with side vents and adjustable drawcords, made to sit over an insulated hard cover, with a 3 year warranty.
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2
Budge P9A16PM1 English Garden Square Hot Tub Cover Chill Score 9.6/10Check price on AmazonAn 86 inch square cover in 600 denier polyester with welded seams and an integrated strap and buckle system, with a 2 year warranty.
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3
iBirdie Outdoor Waterproof Hot Tub SPA Cover 90 x Chill Score 9.6/10Check price on AmazonA 90 inch square cover in 600D fabric with side vents, fabric handles and corner buckles, sized to fit 89 and 88 inch tubs, with a 1 year warranty.
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4
Round Hot Tub Cover Waterproof Outdoor 600D,Spa Chill Score 9.5/10Check price on AmazonA round 75 inch cover in 600D Oxford fabric with a PVC coating, an adjustable drawstring and a storage bag included.
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5
Hot Tub Bubble Blanket - 8 x 8 FT 16-Mil Square Chill Score 9.5/10Check price on AmazonA floating 8 x 8 FT solar blanket in PE that can be cut to size, listed to retain heat and reduce evaporation, for pools, hot tubs and spas.
What we picked for home recovery
A 95 inch square cover in 600D polyester with side vents and adjustable drawcords, made to sit over an insulated hard cover, with a 3 year warranty.
Pros & ConsViewHide
Pros
- 95 x 95 inch square size
- Side vents for airflow
- Adjustable drawcords for a tight fit
- 3 year warranty, the longest term here
Cons
- Must sit over an insulated hard cover, not a standalone cover
- Bullets describe drawcords while the spec table lists a zipper closure
- No handles stated
- No storage bag stated
An 86 inch square cover in 600 denier polyester with welded seams and an integrated strap and buckle system, with a 2 year warranty.
Pros & ConsViewHide
Pros
- 86 x 86 x 14 inch square size with a contoured shape
- Ultrasonically welded seams
- Integrated strap and buckle system for wind
- 2 year warranty stated
Cons
- Bullets frame it as a patio furniture cover
- No vents stated
- No storage bag stated
- Smaller than the 90 and 95 inch square covers here
A 90 inch square cover in 600D fabric with side vents, fabric handles and corner buckles, sized to fit 89 and 88 inch tubs, with a 1 year warranty.
Pros & ConsViewHide
Pros
- 90 x 90 x 18 inch size
- Air vents on both sides
- Double-stitched seams with sealant
- Fabric handles for putting on and taking off
Cons
- Still needs a hard cover or boards underneath
- Cannot be insulated, per the listing
- Bullets describe buckles while the spec table lists straps
- No storage bag stated
A round 75 inch cover in 600D Oxford fabric with a PVC coating, an adjustable drawstring and a storage bag included.
Pros & ConsViewHide
Pros
- Round shape for round tubs
- 75 inch diameter, 12 inch high
- Storage bag included
- Adjustable drawstring for a tight fit
Cons
- Round only, not for square tubs
- No warranty stated
- No vents stated
- No handles stated
A floating 8 x 8 FT solar blanket in PE that can be cut to size, listed to retain heat and reduce evaporation, for pools, hot tubs and spas.
Pros & ConsViewHide
Pros
- 8 x 8 FT size, cut to fit
- Floating design, sits on the water
- Maker lists evaporation reduced by 95%
- 16-mil thickness stated
Cons
- Floating blanket, not an outer protective cover
- No warranty term stated
- No drawstring, buckles or straps stated
- Sold for pools, ponds and spas, not hot tubs only
More to compare
ULTCOVER Waterproof Square Hot Tub SPA Cover 90 inch HeavyCheck price on Amazon- ULTCOVER Waterproof Square Hot Tub SPA Cover 72 inch HeavyCheck price on Amazon
- ULTCOVER Waterproof Square Hot Tub SPA Cover 80 inch HeavyCheck price on Amazon
ULTCOVER Waterproof Square Hot Tub SPA Cover 95 inchCheck price on Amazon- ULTCOVER Waterproof Square Hot Tub SPA Cover 76 inch HeavyCheck price on Amazon
Choosing the best hot tub cover under 75
Shape comes first. The square covers here measure 95, 90 and 86 inch across, while the round pick measures 75 inch in diameter. Measure the length and width of the tub before ordering, and order a cover longer and wider than the tub, as one listing advises.
A second check is what sits underneath. The ULTCOVER and iBirdie listings state their covers must sit over an insulated hard cover or boards, not as standalone covers, so a tub with no hard cover underneath needs a different answer. The floating blanket is the exception: it sits on the water and fastens to nothing, which suits heat retention but not wind protection.
| Cover | Shape | Size | Closure | Warranty |
|---|---|---|---|---|
| ULTCOVER Square Cover | Square | 95 x 95 in | Drawcords | 3 year |
| Budge English Garden | Square | 86 x 86 x 14 in | Drawstring | 2 year |
| iBirdie 90 In Cover | Square | 90 x 90 x 18 in | Zipper, straps | 1 year |
| lihtsofty Round Cover | Round | 75 in diameter x 12 in high | Drawstring | Not stated |
| Gekufa Bubble Blanket | Square | 8 x 8 FT | Pull on | Not stated |
Who should not buy these
If your tub has no hard cover or boards underneath, the fabric covers here will not suit it, since their listings state a hard cover must stay underneath. If you need a cover that insulates a tub, note that only the floating blanket lists thermal insulation, while the iBirdie listing states its cover cannot be insulated. If your tub is round, only the lihtsofty pick fits.
Score notes
The Chill Score weighs performance, build and value above safety and warranty, with safety counted only where it applies. Here, performance covers stated size, fit, vents and closures, and build covers stated fabric and seams. No cover here states a safety certification, so safety is zero for all.
| Product | Chill Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| ULTCOVER Square Cover | 9.7 | 30 | 21 | 20 | n/a | 4 |
| Budge English Garden | 9.6 | 28 | 21 | 20 | n/a | 3 |
| iBirdie 90 In Cover | 9.6 | 29 | 21 | 20 | n/a | 3 |
| lihtsofty Round Cover | 9.5 | 27 | 20 | 20 | n/a | 0 |
| Gekufa Bubble Blanket | 9.5 | 26 | 19 | 19 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
ULTCOVER leads on size and warranty term. Budge pairs a contoured fit with a 2 year term. Gekufa suits heat retention on the water rather than outer protection.
Check Your Space First
- Measure the length and width of the tub before ordering, and order a cover longer and wider than the tub.
- Check that a hard cover or boards can stay underneath, since the ULTCOVER and iBirdie covers state they need that support.
- Match the shape: square covers for square tubs, and the 75 inch round pick only for round tubs.
- Plan storage for the cover when it is off the tub; only the lihtsofty pick includes a storage bag.
Common questions
Do I still need a hard cover under a fabric cover?
For the ULTCOVER and iBirdie picks, yes. Both listings state their covers must sit over an insulated hard cover or boards, not as standalone covers. A tub with no hard cover underneath needs a different answer than a fabric cover alone.
Can a square cover fit a round tub?
No, shape matters here. The square covers measure 95, 90 and 86 inch across, while the round pick measures 75 inch in diameter.
What size cover should I order?
Measure the length and width of the tub first, then order a cover longer and wider than the tub, as the iBirdie listing advises. That cover states fit for 89 x 89 and 88 x 88 inch tubs.
Can I cut a cover to fit?
Only the floating blanket listing states cutting. The Gekufa blanket can be cut to the size and shape of the tub, since it floats on the water. The fabric covers state no cutting, so order those by stated size instead.
Does a cover keep heat in?
Only the floating blanket lists thermal insulation and heat retention from sunlight. The fabric covers protect against rain, snow, debris and sun, and the iBirdie listing states its cover cannot be insulated.
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