Wool vs Cotton Mattress Protectors

Wool-filled and cotton-jersey protectors solve overlapping problems with different thickness, moisture behavior and feel.

Thin cotton-jersey designs

These typically prioritize low bulk and a familiar fabric surface, with waterproofing supplied by a membrane.

Wool-filled designs

These add a lofted fiber layer that can absorb moisture and alter surface feel more noticeably. Some still include a waterproof lining, so wool does not automatically mean membrane-free.