SweetNight CoolNest Ultra Review

Name: SweetNight CoolNest Ultra
Brand: SweetNight

Notice Below are the preliminary measurements for the SweetNight CoolNest Ultra. Members have early access to the test results, and some measurements may be updated before publication.

The full review will be published in a few days.

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Tested using Methodology v1.2

Intro
Our Verdict
Changelog
Longevity
Pressure Relief
Support
Cooling
Motion Dissipation
Responsiveness
Edge Support
Additional Tests
Comments

Mattress Type Locked

Bed-In-A-Box Locked

Firmness Level Locked

Upper Comfort Foam @ Lumbar Locked

Changelog

Updated Sep 10, 2026: Early access published.
Updated Aug 31, 2026: Our testers have started testing this product.
Updated Aug 27, 2026: The product has arrived in our lab, and our testers will start evaluating it soon.
Updated Jul 30, 2026: We've purchased the product and are waiting for it to arrive in our lab.

Test Results

Firmness

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SweetNight CoolNest Ultra Firmness Video Sample

Normalized Stiffness @ Head/Feet Locked Lock Pa/mm

Normalized Stiffness @ Lumbar Locked Lock Pa/mm

Firmness Level Locked Locked

Foam Layer Thickness

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SweetNight CoolNest Ultra Foam Layer Thickness Picture Sample

Quilted Top Locked N/A

Upper Comfort Foam @ Head/Feet Locked Lock cm (Lock")

Upper Comfort Foam @ Lumbar Locked Lock cm (Lock")

Lower Comfort Foam @ Head/Feet Locked Lock cm (Lock")

Lower Comfort Foam @ Lumbar Locked Lock cm (Lock")

Transition Foam Locked Lock cm (Lock")

Support Foam Locked Lock cm (Lock")

Spring Layer Dimensions

Comfort Layer Height Locked N/A

Comfort Layer Coil Gauge Locked N/A

Support Layer Height Locked N/A

Support Layer Coil Gauge @ Head/Feet Locked N/A

Support Layer Coil Gauge @ Lumbar Locked N/A

0.0

Longevity

0.0

Foam Layer Mass Density

Quilted Top Fill Locked N/A

Quilted Top Fill Foam Density vs. Reference Locked N/A

Upper Comfort Foam @ Head/Feet Locked Lock kg/m³ (Lock lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference Locked Lock

Upper Comfort Foam @ Lumbar Locked Lock kg/m³ (Lock lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference Locked Lock

Lower Comfort Foam @ Head/Feet Locked Lock kg/m³ (Lock lb/cu.ft.)

Lower Comfort Foam @ Head/Feet Density vs. Reference Locked Lock

Lower Comfort Foam @ Lumbar Locked Lock kg/m³ (Lock lb/cu.ft.)

Lower Comfort Foam @ Lumbar Density vs. Reference Locked Lock

Transition Foam Locked Lock kg/m³ (Lock lb/cu.ft.)

Transition Foam Density vs. Reference Locked Lock

Support Foam Locked Lock kg/m³ (Lock lb/cu.ft.)

Support Foam Density vs Reference Locked Lock

Foam Layer Material

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SweetNight CoolNest Ultra Foam Layer Material Picture Sample

Quilted Top Fill Locked N/A

Upper Comfort Foam @ Head/Feet Locked Locked

Upper Comfort Foam @ Lumbar Locked Locked

Lower Comfort Foam @ Head/Feet Locked Locked

Lower Comfort Foam @ Lumbar Locked Locked

Transition Foam Locked Locked

Support Foam Locked Locked

0.0

Pressure Relief

0.0

Body Conformity

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SweetNight CoolNest Ultra Body Conformity Picture 2 Sample

Indent @ 50 kg (110 lb) Locked Lock mm (Lock")

Indent @ 80 kg (176 lb) Locked Lock mm (Lock")

Indent @ 110 kg (242 lb) Locked Lock mm (Lock")

0.0

Comfort Layers Envelopment

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SweetNight CoolNest Ultra Sinking & Contouring Picture Sample

Sinking Depth Locked Lock cm (Lock")

Diameter Of Distortion Locked Lock cm (Lock")

0.0

Support

0.0

Support

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SweetNight CoolNest Ultra Pelvis Indentation vs. Body Weight Sample

Indent Difference @ 50 kg (110 lb) Locked Lock mm (Lock")

Indent Difference @ 80 kg (176 lb) Locked Lock mm (Lock")

Indent Difference @ 110 kg (242 lb) Locked Lock mm (Lock")

0.0

Cooling

0.0

Cooling

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SweetNight CoolNest Ultra Cooling Graph Sample

Energy Transferred Over 1st Hour Locked Lock kJ

Energy Transferred Over 8 Hours Locked Lock kJ

0.0

Motion Dissipation

0.0

Motion Isolation

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SweetNight CoolNest Ultra Lumbar Motion Isolation Sample

Peak Acceleration @ Head/Feet Locked Lock g

Dissipation Time @ Head/Feet Locked Lock s

Peak Acceleration @ Lumbar Locked Lock g

Dissipation Time @ Lumbar Locked Lock s

0.0

Responsiveness

0.0

Responsiveness

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SweetNight CoolNest Ultra Responsiveness Video Sample

Response Time Locked Lock s

0.0

Bounciness

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SweetNight CoolNest Ultra Bounciness Video Sample

Maximum Rebound Height Locked Lock cm (Lock")

Foam Layer Resilience

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SweetNight CoolNest Ultra Foam Layer Resilience Video Sample

Quilted Top Fill Locked N/A

Upper Comfort Foam @ Head/Feet Locked Lock%

Upper Comfort Foam @ Lumbar Locked Lock%

Lower Comfort Foam @ Head/Feet Locked Lock%

Lower Comfort Foam @ Lumbar Locked Lock%

Transition Foam Locked Lock%

Support Foam Locked Lock%

0.0

Edge Support

0.0

Edge Support

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SweetNight CoolNest Ultra Small Platen Sample

Naturalistic Loading Pad Indentation Locked Lock mm

Small Platen Indentation @ 0 mm From Edge Locked Lock mm

Small Platen Indentation @ 150 mm From Edge Locked Lock mm

Increased Indentation @ Mattress Edge Locked Lock mm

Edge Construction

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SweetNight CoolNest Ultra Edge Support Picture Sample

Edge Component Locked Locked

Additional Tests

Design Style

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SweetNight CoolNest Ultra Style Picture Sample

Mattress Type Locked Locked

Bed-In-A-Box Locked Locked

Quilted Top Layer Locked Locked

Grab Handles Locked Locked

Thickness Locked Lock cm (Lock")

Components Cover

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SweetNight CoolNest Ultra Cover Picture Sample

Sleeping Surface Material Locked Locked

Removable Locked Locked

Machine Washable Locked Locked

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