How can the comfort of a pull-out couch be improved for sitting?

Over time, the original cushions on a pull-out couch can lose their firmness, leading to discomfort and inadequate support when sitting.

By replacing or supplementing these cushions with high-density foam or a thick, supportive seat pad, the seating surface becomes much more comfortable and resilient.

This improvement helps prevent sagging and provides better ergonomic support for extended periods of sitting.