Hi Nick,

Please see our Article here all about mattress bases, where we do disclose the amount of pocket springs in a sprung divan base.

Our pocket sprung edge bases contain 1000 pocket springs in the sprung edge version in a king size.

These are spun bond pocket springs.

You can see these on the image on the following post about sprung edge bases.

The upholstery covers 600gsm of Cotton/wool rebound and then the base uses hessian to cover non-upholstered sides, ie the very bottom underside.

I hope that helps.

Kind Regards Gary