Finding the mattress that moves with your rhythm
Sleep is deeply personal. The mattress that works for one person may not work for another.
At Circadia, every mattress is handcrafted to work in harmony with the body’s natural alignment through our proprietary Ergoshell™ architecture. The goal is simple. Your body should feel supported, relaxed, and balanced through the night.
This guide will help you understand what to consider before choosing the mattress that suits you best.
Understanding what your body really needs from a mattress.
Many people assume that a comfortable mattress must be soft. In reality, what the body needs most is balanced support.
A well-designed mattress should do three things:
- Support the natural curve of your spine
- Allow your shoulders and hips to relax
- Prevent pressure build-up through the night
Finding the firmness that works
best for your sleep position.
best for your sleep position.
Your preferred sleep posture plays an important role in choosing the right firmness.
Side Sleepers
Side sleepers need a mattress that allows the shoulders and hips to sink slightly while keeping the spine aligned.
Circadia Recommends: Medium to medium-soft support
Back Sleepers
Back sleepers benefit from a mattress that supports the lower back while maintaining a neutral spine.
Circadia Recommends: Medium support
Stomach Sleepers
Stomach sleepers require firmer support to prevent excessive arching of the spine.
Circadia Recommends: Medium-firm support
A mattress that is too soft
can cause the body
to sink unevenly.
A mattress that is too firm
can create pressure points.
The right mattress supports without resistance and cushions without collapse.
Choosing the right mattress size
for your space and sleeping habits.
for your space and sleeping habits.
The size of your mattress can make a surprising difference to sleep quality.
Mattress Size
Single
Dimensions
72" × 36"
Ideal For
Children or single sleepers
If you tend to move frequently during sleep, choosing a larger mattress can significantly improve comfort.
Mattress Size
Queen
Dimensions
78" × 60"
Ideal For
Couples who prefer moderate space
If you tend to move frequently during sleep, choosing a larger mattress can significantly improve comfort.
Mattress Size
King
Dimensions
78" × 72"
Ideal For
Couples who prefer more room
If you tend to move frequently during sleep, choosing a larger mattress can significantly improve comfort.
How body weight influences
mattress support and comfort.
mattress support and comfort.
Body weight affects how deeply a mattress compresses and how well it supports the spine.
Under 70 kg
A medium mattress usually provides adequate support.
70–90 kg
Medium to medium-firm mattresses tend to provide better alignment.
Above 90 kg
A firmer configuration helps maintain spinal support.
What to consider when two people share the same mattress.
Circadia mattresses are designed to minimise movement disturbance so both partners can rest comfortably.
Circadia mattresses can also be customised with differential compression zones within the same mattress, allowing each partner to receive the support best suited to their body
Why every Circadia mattress is handcrafted only after your order is placed.
Circadia mattresses are not mass produced.
Each mattress is handcrafted only after an order is confirmed. This allows us to maintain strict quality control and ensure the integrity of every layer.
It also means materials are never compressed and stored for long periods before reaching you.
Every mattress is produced specifically for the person who will sleep on it.
What to review before confirming your purchase.
Because every Circadia mattress is handcrafted and made to order, all sales are final.
We recommend reviewing this guide carefully and speaking with our team if you need assistance before confirming your purchase.
If you’d like guidance,
our team is always happy to assist.
our team is always happy to assist.
If you’re unsure, our team will gladly help you evaluate:
- Sleeping position
- Support preference
- Body weight considerations
- Mattress size for your space
You can reach us at: support@circadiasleep.com