Hi Tania,

Thank you for your question.

This is a very interesting question you raise around coir especially with contemporary latex mattresses. Coir has been used recently in the mattress world.
It's usually coconut husk or equivalent, not to be blunt but for those who are scratching their heads, or coconuts, it's the equivalent of a fluffed up thick door matt in terms of its raw state.

Coir is then sometimes sprayed with latex and or topped with latex usually as you state in a cot mattress.

You're right that sometimes due to its nature it will dip over time, like most materials. A cot mattress shouldn't dip unless you have a really heavy little one!
You can avoid this with regular maintenance, turning etc.

Moving onto Natural Latex, the reason why cot mattresses use coir is that the weight of a baby or child is a lot less than say an adult. Using solid latex would be expensive and over kill for this purpose. It means that you can use a thin slice of latex for comfort whilst using the coir for the majority of the mattress. This keeps the price down. We have a range of 100% natural latex mattresses under the Fusion range.
The benefits of solid core latex are that it is incredibly progressive in its comfort, allowing a soft sink before support. Due to the fact its a solid core of latex means its very durable, there are fewer components and moving parts to fail or deteriorate. Please have a look here for more detail.

Our Natural Cot mattress has been made with your little one in mind. Using 100% Natural breathable upholstery this two-sided cot mattress comes with 2 covers for your convenience.

The John Ryan By Design Cot mattress has been designed to support babies. To help them sleep soundly throughout the night. We have taken our experience in natural mattress fibres and latex to create the perfect hypoallergenic cot mattress. This cot mattress offers your newborn baby the firmer support they will need during their infancy blended with incredible natural breathable fibres. This ensures a temperature controlled nights sleep where your baby is supported and comforted where they need it.

This cot mattress comes with a 5 year guarantee.

Conforms to BS1877-10: 2011+A1:2012 and BS7177: 2008+A1:201

Please see here for informational articles on cot mattresses explained and cot mattress safety here.

Please get in touch on 0161 437 4419 directly if you want to discuss further.

Kind regards,
Amy.