Cool Gel Memory Foam Mattress 21cm | Queen

The Giselle Bedding Mona Series is a 21cm-thick Queen non-spring memory foam mattress with a multi-layer foam structure: a CertiPUR-US certified cool gel memory foam top layer, an egg-shaped foam middle layer for pressure distribution, and a high-density support foam base. The premium knitted air-mesh fabric cover is removable via zip for easy cleaning.

The layered foam design helps reduce motion transfer for less partner disturbance, and the anti-slip base keeps the mattress stable on the bed frame. The mattress arrives vacuum-packed and expands to its full shape within approximately 24 hours of unpacking.

Not suitable for children under 3 years of age.

Features

• Giselle Bedding Mona Series
• 21cm thickness
• Medium-firm feel
• Multi-layer foam construction
• Top: CertiPUR-US certified cool gel memory foam
• Middle: egg-shaped foam layer
• Base: high-density support foam
• Premium knitted air-mesh fabric cover
• Removable zippered cover
• Anti-slip base
• Low motion transfer design

Specifications

• Brand: Giselle Bedding
• Size: Queen — 153cm × 203cm × 21cm
• Firmness: Medium Firm
• Packaging: Vacuum-packed; expands within ~24 hours
• Assembly required: No
• Number of packages: 1

Frequently asked

Is this mattress hypoallergenic or dust mite resistant?
All mattresses gradually collect allergens through normal use. A mattress encasement can help create a barrier between you and the mattress surface.

• Encase the whole bed — mattress, pillows and quilt — for full coverage where you sleep. Shop the dust mite encasement range.
• Short on budget? Start with the mattress. A dust mite mattress protector covers the biggest surface for the lowest spend — then add a pillow protector and quilt protector later.
• Backed by research. A 2003 clinical trial found mattress and pillow encasings significantly reduced dust mite allergen levels over 12 months.
• Get the full setup right. Our low-allergen bedroom guide covers encasements, washing and humidity in one place.

Managing a diagnosed allergy? Your GP or allergy specialist can advise on what's right for you.

What's CertiPUR-US certification?
CertiPUR-US is an independent certification program for flexible polyurethane foam. It indicates the foam has been tested for content (free of certain substances like ozone-depleting chemicals, formaldehyde, and certain phthalates), emissions, and durability. The cool gel memory foam top layer in this mattress is CertiPUR-US certified.

Is cool gel memory foam better for hot sleepers?
Cool gel infused memory foam is designed to dissipate heat more effectively than standard memory foam. The Mona Series uses cool gel as its top layer, paired with an air-mesh fabric cover that allows airflow. Real-world cooling depends on bedding choice, room temperature, and personal sleep environment.

What does the egg-shaped foam middle layer do?
The egg-crate profile of the middle foam layer increases surface area for airflow and helps distribute pressure across the mattress. It sits between the cool gel top layer and the high-density support base, contributing to the medium-firm feel.

Will this fit a dust mite mattress encasement?
This mattress is 21cm deep, 153 × 203cm (Queen). Encasements sized for 20–28cm Queen mattresses fit. Browse our mattress encasement range for current sizing.

What sizes is this mattress available in?
This listing is the Queen. The Mona Series is also available in Single — see our full mattress range for other sizes and series.

How does it arrive?
Vacuum-packed in a box for easy delivery and room access. Allow up to 24 hours after unboxing for the mattress to fully expand to its 21cm profile.

Package contents

• 1 × Giselle Bedding Mona Series Memory Foam Mattress
• 1 × Plastic bag opener

Free shipping Australia-wide.