Spatender Floating Thermal Spa Cover Blanket hot tub Review: Who It Fits and Who Should Skip It

What stands out

• 3/8-inch thick Thermaltech foam construction
• 7' x 6' rectangular dimensions (84" x 72")
• Reduces heat loss through evaporation
• Protects hard cover from chemical deterioration
• Trim-to-fit design using scissors

Who it fits

Spatender Key Specs Explained

Dimensions: 7' x 6'

This blanket measures 84 inches by 72 inches. You need a rectangular hot tub of similar size for a proper fit. If your tub is larger, you will need to trim the foam with scissors. If it is smaller, the excess material may float loosely. Check your tub's exact footprint before purchasing to ensure the rectangular shape aligns with your spa's corners.

Thickness: 3/8"

The foam layer is 0.375 inches thick. This density provides enough insulation to reduce heat loss through evaporation at the water surface. It is thick enough to offer some protection against chemical damage to your hard cover below, but thin enough to float easily. Compare this to thicker solar blankets if you need more rigid insulation or higher heat retention in very cold climates.

Shell Material: Thermaltech foam

The core material is a high-density foam called Thermaltech. This material is durable and designed to withstand weather changes without degrading quickly. It traps heat effectively by limiting water vapor escape. When shopping, look for similar high-density foam cores that resist water absorption. This material choice ensures the blanket remains buoyant and functional throughout the season without becoming waterlogged or heavy.

Cover Type: Floating Thermal Spa Cover Blanket

This is a floating blanket, not a rigid cover. It sits directly on the water surface to lock in heat and reduce chemical evaporation. You place it on top of your existing hard cover or directly on the water. This type is ideal for summer use or as an extra winter layer. It protects your expensive hard cover from harsh gases and debris falling into the spa.

Design and Build Overview

According to the listing, this blanket is crafted from Thermaltech foam. This material is a high-density foam layer that is 3/8 inch thick. The foam serves as the primary shell material. This thickness is designed to provide durability against weather changes. It also aims to protect your hard tub cover from chemical damage. The material choice suggests a focus on thermal retention and physical protection for your existing spa equipment.

The unit measures 7 feet by 6 feet, which translates to 84 inches by 72 inches. It has a rectangular shape. This specific footprint is intended for hot tubs of similar dimensions. You can adjust the fit by cutting the foam with scissors. This feature allows for customization if your tub is slightly larger than the standard size. The cream color is noted in the specifications, though this is a cosmetic detail.

This is a floating thermal spa cover blanket. It sits directly on the water surface. There are no controls, displays, or complex mechanisms involved. The design is purely passive. It locks heat at the surface level and reduces evaporation. This simple layout means you can easily pop it on or take it off. It is suitable for both summer and winter use. The lack of electronic components means there is nothing to break or require maintenance.

Setup And Daily Use Guide

Setting up this Spatender blanket requires no complex tools. The listing states you simply place the 7' x 6' foam sheet directly on the water surface. If your hot tub is slightly larger than the 84 by 72 inch dimensions, you must cut the material with scissors to achieve a proper fit. The rectangular shape allows it to float securely over the filled tub. This floating design is central to its function. It sits on the water rather than covering the entire hard lid. This means you do not need to remove or store your heavy hard cover during the day. You can keep the hard cover in the garage for summer use or store it away when not needed. The blanket locks heat at the surface level. By reducing evaporation, it minimizes heat loss and limits the release of gases that can damage your expensive hard cover and head rests. Daily use involves placing the cream-colored foam on the water whenever you want to retain warmth or prevent debris from falling in. It works with most rectangular spas that match its size. You do not need to attach it to any mechanism. It relies on buoyancy. The Thermaltech foam material withstands weather changes and chemical exposure. This simple setup allows you to keep the tub warm on cool nights without the hassle of managing a bulky cover. It is designed for straightforward, immediate use once placed on the water.

Before You Buy This Foam Cover

You should verify your hot tub’s exact internal dimensions before ordering. This 7 by 6 foot blanket fits rectangular spas that match these measurements. If your tub is larger, you must trim the foam with scissors. The listing notes it protects your hard cover from chemical damage and gases caused by evaporation. You will need to keep the heavy hard cover in storage during summer months if you use this floating blanket. It helps trap heat at the surface, reducing energy loss. Clean the foam gently after use to remove debris. Store it flat when not in use to maintain its shape. This product suits owners who want a lightweight summer cover or an extra layer to reduce heating costs. It does not replace your primary insulated cover. Check that your spa shape is rectangular. Confirm the 84 by 72 inch size matches your water surface area. Ensure you have scissors ready for trimming if needed. This simple foam layer is a practical addition for specific seasonal or energy-saving needs.

Check before you buy

• Confirm your hot tub is rectangular and matches the 7 by 6 foot size.
• Check if you need to trim the foam with scissors for a perfect fit.
• Ensure you have a primary hard cover to store during summer months.
• Verify the thermal foam will protect your existing cover from chemical damage.

The product at a glance

1

Spatender 7x6 ft Floating Thermal Spa Blanket

Best for: reducing heat loss and protecting hard covers

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

The Spatender Floating Thermal Spa Cover Blanket is a 7' x 6' rectangular foam sheet designed to sit directly on the water surface. Its 3/8" thick Thermaltech foam construction traps heat and reduces evaporation. This cream-colored cover protects your main hard cover from chemical damage and debris. It is a practical addition for maintaining water temperature and reducing heating costs during summer or winter use.

Pros

• 3/8" thick high-density Thermaltech foam layer
• 7' x 6' rectangular dimensions for broad coverage
• Reduces heat loss by limiting surface evaporation
• Protects the hard cover from chemical deterioration

Cons

• Requires manual cutting to fit specific tub shapes
• Does not include a locking mechanism or straps
• Limited to 7' x 6' size for standard tubs

Good fit if

• You want to reduce heating expenses by trapping heat
• You need extra protection for your hard cover from chemicals
• You prefer a lightweight cover that floats on the water

Skip if

• You need a rigid cover that supports weight
• You have a hot tub larger than 7' x 6'
• You want a cover that stays in place without cutting

Verdict: Spatender 7x6 ft Thermal Spa Cover is a simple foam layer that effectively reduces evaporation and protects your hard cover. It fits users who prioritize heat retention and chemical protection over structural support.

Specifications side by side

Frequently asked questions

See also

• spatender floating thermal spa cover blanket hot tub alternatives
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