30cm Cool Gel Memory Foam Mattress | King

The Giselle Bedding Tiberius Series is a 30cm-thick King mattress combining a pocket spring system with cool gel infused memory foam. The medium-firm feel suits a wide range of sleep preferences, with a 6-turn coil system and high-density foam base providing consistent support and stability.

The independent pocket coils help reduce motion transfer for shared sleeping spaces, and the breathable bamboo knitted fabric cover supports airflow. The mattress arrives vacuum-rolled and expands to full shape within approximately 24 hours of unpacking.

Features

• Giselle Bedding Tiberius Series
• 30cm thickness
• Medium-firm feel (6.5)
• Pocket spring system
• 6-turn coil technology
• Cool gel infused memory foam comfort layer
• High-density foam base
• Bamboo knitted fabric cover
• Reduced partner disturbance
• Ventilated construction

Specifications

• Brand: Giselle Bedding
• Size: King — 183cm × 203cm × 30cm
• Firmness: 6.5 / Medium Firm
• Colour: White, grey, green
• Packaging: Vacuum-rolled; expands to full shape within ~24 hours
• Assembly required: No

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.

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 Tiberius Series uses cool gel as its comfort layer over a pocket spring core. Real-world cooling depends on bedding choice, room temperature, and personal sleep environment.

Is a mattress protector recommended?
Yes — a fitted mattress protector or encasement helps keep dust, skin cells, and spills from reaching the mattress, and can extend the lifespan of any mattress. Browse our dust mite mattress protector range for current sizing.

How long does it take for the mattress to fully expand after unpacking?
The mattress typically expands to its full shape within 24 hours of being unboxed.

Will this fit a dust mite mattress encasement?
This mattress is 30cm deep, 183 × 203cm (King). Encasements sized for 24–33cm King mattresses fit. Browse our mattress encasement range for current sizing.

What sizes is this mattress available in?
This listing is the King. The Tiberius Series is also available in Queen — see our full mattress range.

Package contents

• 1 × Giselle Bedding Tiberius Series Mattress
• 1 × Plastic bag cutter