Hi Natalia,

We do make mattresses with split spring tensions in our Artisan range and only in king size and above. Zip and link mattresses can also provide this and we have never had any returned because they can feel the zip. The zips are placed around 1.5 cm down from the top and normally, placing a standard size mattress protector on the mattresses is sufficient to prevent any chance of you feeling the zip.

With your particular body weights, I would suggest that you opt for a soft/medium split. I trust that this helps, but if you have any further queries, please do not hesitate to call our office on 0161 437 4419

Kind regards.