Key takeaways
- Firm, airy structure for long-term stability.
- Resists the gradual compression that causes permanent body impressions.
- Ethically harvested from a renewable source - a by-product of the coconut harvest.
The support core decides whether a mattress still feels the same in year eight. Coir is a natural fibre with genuine structural stiffness, so it resists the gradual compression that produces permanent body impressions in foam cores.
The comfort layers decide how a mattress feels in the first minute. The support core decides how it feels in year eight.
Coir holds its shape because its stiffness is structural rather than a function of density, which is what separates a core that lasts from one that slowly develops a hollow where you sleep.
Coir is a loose fibre structure, so air moves through the middle of the mattress rather than stopping at the comfort layers.
That matters for moisture as much as temperature: a core that breathes does not hold humidity in the centre of the mattress where it cannot escape.