6 Best Alternatives to the Spatender Floating Thermal Hot Tub (2026)

How these spa covers compare

BeyondNice 8x8 ft Custom Foam Spa Cover

The BeyondNice 8x8 ft Custom Foam Spa Cover targets larger 8-foot square spas, whereas the Spatender fits 6-foot models. This option measures 96 inches on each side, providing 144 more square inches of surface area than the Spatender’s 72-inch square. It weighs 70 pounds, making it heavier than the standard Spatender blanket. The material remains closed cell foam, similar to the original, but the increased thickness and size offer more robust insulation for bigger tubs. You should choose this if your spa exceeds the 6-foot dimension. It sacrifices the lightweight, easy-to-store nature of the floating blanket for a more substantial, custom-fit barrier. The custom sizing ensures a precise fit, reducing gaps where heat might escape. It is ideal for owners prioritizing exact dimensions over portability.

The Cover Guy 7x7 ft Insulated Spa Cover

The Cover Guy 7x7 ft Insulated Spa Cover differs significantly by offering rigid weather protection instead of a flexible floating sheet. It measures 84 inches square, bridging the gap between the 6-foot Spatender and the 8-foot BeyondNice. This cover features R19 insulation, a specific thermal rating not listed for the Spatender’s 3/8-inch foam. Weighing 45 pounds, it is heavier than the lightweight foam blanket but lighter than some custom vinyl options. The rigid shell design allows for storm runoff, a practical advantage over the flat floating blanket that may collect debris. You should pick this if you want structural durability and superior thermal ratings. It gives up the ease of simply laying a sheet on the water. Instead, it provides a permanent, sturdy solution for square spas needing high-performance insulation.

BeyondNice 96x96-Inch 4-2 Taper Spa Cover Foam

The BeyondNice 96x96-Inch 4-2 Taper Spa Cover Foam is designed for replacing foam in existing square spa covers, unlike the Spatender which floats directly on water. It measures 96 inches square with a tapered thickness ranging from 4 to 2 inches, offering much greater depth than the Spatender’s uniform 3/8-inch layer. This foam insert weighs 50 pounds and is intended to fit inside a vinyl shell. It suits buyers who already have a hard cover but need to restore thermal performance. The Spatender is a standalone insulator, while this product is a replacement component. You should choose this if your current cover’s insulation has degraded. It provides substantial thermal mass through its tapered design. However, it requires an existing cover structure, making it incompatible with tubs using only floating blankets.

Spatender 7x6 ft Floating Thermal Spa Blanket

The Spatender 7x6 ft Floating Thermal Spa Blanket offers a rectangular shape, differing from the original product’s square 6x6 footprint. It measures 84 inches by 72 inches, providing more surface area for rectangular spas. Like the original, it uses 3/8-inch closed cell foam and floats on the water surface. This version maintains the same lightweight, easy-to-install nature as the 6x6 model. You should pick this if your hot tub is rectangular rather than square. It provides the same chemical protection for hard covers and reduces heat loss through evaporation. The additional length accommodates wider tubs without leaving exposed water edges. It gives up nothing in terms of material quality or function. It is simply a size variant for owners who need a non-square insulating layer.

The Cover Guy 7x7 Ft Insulated Spa Cover

The Cover Guy 7x7 Ft Insulated Spa Cover is another rigid option for 7-foot square spas, similar to the other Cover Guy model but with different thickness specifications. It measures 84 inches square and weighs 45 pounds, matching the weight of the previous rigid cover. This model also provides R19 insulation, offering a specific thermal rating that exceeds the Spatender’s 3/8-inch foam. The rigid shell design protects against weather and debris better than the floating blanket. You should choose this if you prefer a permanent, sturdy cover over a flexible sheet. It sacrifices the convenience of a floating blanket for enhanced durability and thermal performance. The square shape fits 84-inch spas precisely. It is ideal for owners seeking robust protection who do not want to store a heavy hard cover.

MySpaCover 92" x 92" Marine Vinyl Spa Cover

The MySpaCover 92" x 92" Marine Vinyl Spa Cover is a heavy-duty option for large square spas, measuring 92 inches on each side. It weighs 60 pounds, significantly more than the lightweight Spatender blanket. This cover uses marine vinyl for UV protection, a feature not highlighted for the foam-only Spatender. It is designed for durability and heat retention in larger tubs. You should pick this if you need a robust cover that resists sun damage and weather. It gives up the lightweight, easy-storage advantage of the floating foam sheet. The marine vinyl construction offers a longer lifespan in harsh sunlight. It is suitable for owners of 92-inch square spas who prioritize long-term durability and UV resistance over the simplicity of a floating blanket.

Quick picks

Our 7 picks

1 Best overall

Spatender 6' x 6' Foam Floating Spa Blanket

Best for: small square tubs needing extra insulation

Cover Type

Floating Thermal Hot Tub Blanket

Shape

Rectangular

Dimensions

6' x 6'

Shell Material

Closed Cell Foam

Thickness

3/8"

Features

Pool Cover

View on Amazon: Spatender 6' x 6' Foam Floating Spa Blanket Affiliate link

This Spatender floating thermal blanket measures 6 feet by 6 feet with a 3/8-inch closed cell foam core. It floats directly on the water surface to trap heat and reduce evaporation. The cream-colored rectangular design protects your hard cover from chemicals and debris. You should use this blanket to keep your hot tub warm during summer or winter while lowering heating costs.

Pros

• 3/8-inch thick closed cell foam insulation
• 6' x 6' rectangular floating design
• Reduces heat loss through evaporation
• Protects hard cover from chemical damage

Cons

• Limited to 6' x 6' size
• Requires manual cutting for perfect fit
• No remote or app control

Good fit if

• You have a 6' x 6' hot tub
• You want to reduce heating costs
• You need debris protection for summer

Skip if

• Your tub is larger than 6' x 6'
• You prefer a rigid hard cover only
• You want automatic temperature control

Verdict: Spatender 6x6 Floating Thermal Spa Blanket is a practical insulating layer for owners of 6-foot square tubs who want to save energy and protect their hard cover from weather and chemicals.

2 Also great

BeyondNice 8x8 ft Custom Foam Spa Cover

Best for: Owners of 8' x 8' spas needing custom sizing

Cover Type

Replacement spa & hot tub cover

Dimensions

8' x 8'

Thickness

4, 5 or 6 inches

Fastening Method

Straps with a locking feature

Material

Foam

Features

Pool Cover

View on Amazon: BeyondNice 8x8 ft Custom Foam Spa Cover Affiliate link

This is a custom-made replacement spa cover from BeyondNice. It features a foam core with thickness options of 4, 5, or 6 inches. The cover measures 8' x 8' and weighs 70 pounds. It uses straps with a locking feature for fastening. You should choose this if you need a durable, made-in-the-USA cover that fits your specific spa dimensions. It offers 13 color options for customization.

Pros

• Custom-made to your specific spa dimensions
• Foam core available in 4, 5, or 6 inch thicknesses
• Includes straps with a locking feature
• Backed by a 5-year warranty

Cons

• Requires manual measurement and ordering process
• Heavier build at 70 pounds
• No remote or app control included

Good fit if

• You need a cover that matches non-standard spa sizes
• You want a thick foam core for better insulation
• You prefer a durable cover with a long warranty

Skip if

• You need a pre-sized cover for immediate use
• You want a lightweight cover for easy handling
• You prefer a standard 6'x6' or 7'x6' size

Verdict: BeyondNice 8'x8' Custom Replacement Cover is a solid choice for owners of 8' x 8' spas who need a precise fit. It suits those who prioritize custom sizing and insulation thickness over convenience.

3 Also great

The Cover Guy 7x7 ft Insulated Spa Cover

Best for: Square 7-foot spas needing rigid weather protection

Cover Type

Replacement Spa Cover

Shape

Square

Dimensions

7' x 7'

Shell Material

Marine-grade vinyl

Thickness

4 in. down to 2 in.

Insulation Rating

R19

View on Amazon: The Cover Guy 7x7 ft Insulated Spa Cover Affiliate link

This rigid replacement cover measures 84 by 84 inches and serves as an exterior alternative to floating thermal blankets. It features high-density foam tapered from 4 inches down to 2 inches for precipitation runoff, an R19 insulation rating, and a marine-grade vinyl shell. You will find it suits rigid square hot tubs needing overhead weather defense alongside heat retention.

Pros

• Tapered 4-inch to 2-inch foam core sheds rain, ice, and snow
• R19 thermal insulation rating retains heat
• Marine-grade vinyl shell with UV protection resists sun damage
• Reinforced tie-down straps meet ASTM load-bearing thresholds

Cons

• At 45 pounds, it is significantly heavier than lightweight floating blankets
• Rigid 84-inch by 84-inch square build cannot be trimmed to fit irregular spa contours

Good fit if

• You own a standard 7-foot by 7-foot square hot tub
• You need a structural, tapered hard cover that sheds snow and standing water
• You want an R19 insulation barrier with reinforced tie-down straps

Skip if

• You have a round, oval, or non-standard spa that requires a cut-to-fit floating blanket
• You prefer an ultralight thermal layer that one person can lift without handling 45 pounds

Verdict: The Cover Guy 7x7 ft Square Replacement Hot Tub Cover delivers substantial R19 insulation and storm runoff for owners of 84-inch square spas who want a rigid exterior shell instead of a flexible floating foam sheet.

4 Also great

BeyondNice 96x96-Inch 4-2 Taper Spa Cover Foam

Best for: Replacing foam in square spa covers

Cover Type

Replacement Custom Foam

Dimensions

96 x 96 inches

Thickness

4-2 Taper

Features

Pool Cover

Use

Spas

Weight

50 pounds

View on Amazon: BeyondNice 96x96-Inch 4-2 Taper Spa Cover Foam Affiliate link

This is a replacement foam core for hot tub covers, not a full cover. It measures 96 by 96 inches with a 4-to-2 inch taper. The tapered design helps rain run off. It weighs 50 pounds. You use this if your vinyl is fine but the foam is cracked. It fits standard square spas. It provides insulation for your spa.

Pros

• 4-to-2 inch tapered foam for better insulation
• 96 by 96 inch size for square spas
• Tapered shape aids rain runoff
• Customizable foam thickness and strength
• ASTM compliant construction

Cons

• Sells as foam only, not a complete cover
• Requires freight delivery to your home
• Sold as two separate pieces

Good fit if

• You need to replace cracked foam in an existing cover
• You want to customize the insulation thickness
• You have a 96 by 96 inch square spa

Skip if

• You need a complete cover with vinyl and straps
• You want a pre-made cover that ships quickly
• You have a round or rectangular spa that is not square

Verdict: BeyondNice Custom Foam Spa Cover 96x96 is a practical foam replacement for owners of square spas who need to fix damaged insulation. It fits buyers who want to keep their current vinyl cover but improve the thermal performance.

5 Best budget

Spatender 7x6 ft Floating Thermal Spa Blanket

Best for: Protecting hard covers and reducing heat loss

Cover Type

Floating Thermal Spa Cover Blanket

Shape

Rectangular

Dimensions

7' x 6'

Shell Material

Thermaltech foam

Thickness

3/8"

Features

Pool Cover

View on Amazon: Spatender 7x6 ft Floating Thermal Spa Blanket Affiliate link

This Spatender floating thermal cover is a 3/8-inch thick rectangular foam blanket measuring 7 feet by 6 feet. It floats directly on the water surface to reduce heat loss through evaporation. The durable Thermaltech foam protects your existing hard cover from chemical damage and UV exposure. It is a practical summer or winter solution for spas that need an extra layer of insulation.

Pros

• 3/8-inch thick high-density Thermaltech foam
• 7' x 6' rectangular dimensions
• Reduces heat loss and evaporation
• Protects hard cover from chemicals

Cons

• Requires cutting to fit specific tubs
• Cream color may show dirt
• No remote or app control

Good fit if

• You want to protect your hard cover from chemicals
• You need extra insulation for summer or winter
• You have a rectangular spa around 7' x 6'

Skip if

• You need a rigid, custom-fit replacement cover
• You want a cover that does not require cutting
• You prefer a dark color to hide debris

Verdict: Spatender 7'x6' Thermal Foam Blanket is a simple, effective insulator for rectangular spas. It fits buyers who want to extend the life of their hard cover and reduce heating costs without complex installation.

6

The Cover Guy 7x7 Ft Insulated Spa Cover

Best for: square spas requiring rigid R19 thermal protection

Cover Type

Replacement Spa Cover

Shape

Square

Dimensions

7' x 7'

Shell Material

Marine-grade vinyl

Thickness

4 in. down to 2 in.

Insulation Rating

R19

View on Amazon: The Cover Guy 7x7 Ft Insulated Spa Cover Affiliate link

This pre-built 7-by-7-foot replacement spa cover serves as a rigid exterior alternative to floating thermal blankets. It features high-density foam providing an R19 insulation value, tapering from 4 inches down to 2 inches for water runoff. Encased in UV-protected marine-grade vinyl, the 45-pound structure stays secured with reinforced straps. You get substantial thermal barrier protection for standard square tubs.

Pros

• High-density foam core delivers an R19 insulation rating
• Tapered 4-inch to 2-inch thickness promotes rain, snow, and ice runoff
• Marine-grade vinyl shell with UV protection against color fading
• Reinforced tie-down straps support load thresholds exceeding ASTM standards

Cons

• Fixed 84-by-84-inch square dimensions do not fit non-square spas
• Weighs 45 pounds, requiring more effort to lift than floating thermal sheets

Good fit if

• You own a square spa measuring 84 inches by 84 inches.
• You need rigid R19-rated thermal foam insulation instead of a flat floating blanket.
• You want a pre-built replacement unit that skips custom manufacturing wait times.

Skip if

• You have a round or non-square hot tub that requires custom dimensions.
• You want an ultra-lightweight thermal barrier that rolls up by hand.

Verdict: The Cover Guy 7x7 ft Square Replacement Spa Cover suits owners of 84-inch square tubs seeking rigid R19 foam protection over floating film blankets.

7 Best premium

MySpaCover 92" x 92" Marine Vinyl Spa Cover

Best for: square spa owners needing durable UV protection

Cover Type

Spa cover replacement

Shape

Square

Dimensions

92" x 92"

Shell Material

30 oz Marine Vinyl

Thickness

4" to 2.5"

Insulation Rating

1.5 lb

View on Amazon: MySpaCover 92" x 92" Marine Vinyl Spa Cover Affiliate link

This 92" x 92" square spa cover replacement uses 30 oz marine vinyl and 1.5 lb EPS foam. The tapered 4" to 2.5" design sheds water and traps heat. It fits many major brands, but you must check your corner radius. The 60-pound build includes a 3-year warranty. It suits owners of large square spas needing a ready-made, durable cover.

Pros

• 30 oz marine vinyl shell resists UV and weather
• 1.5 lb EPS foam core reduces heat loss
• Tapered slope sheds rain and snowmelt effectively
• Double-stitched seams and reinforced zippers for durability
• 3-year warranty included with purchase

Cons

• 60-pound weight makes handling difficult for some
• Requires exact corner radius matching for proper fit
• Limited to square 92" x 92" dimensions only

Good fit if

• You own a 92" x 92" square spa
• You need a durable, UV-resistant marine vinyl cover
• You want a ready-made replacement without custom waits

Skip if

• You have a round or rectangular spa
• You need a lightweight cover for easy lifting
• You require a custom radius under 5 inches

Verdict: MySpaCover 92" Square Marine Vinyl is a sturdy, ready-made option for owners of large square spas who prioritize UV protection and heat retention over lightweight convenience.

Specifications side by side

Frequently asked questions

See also

• cusimax hot plate alternatives
• airoutelle cold plunge tub alternatives