How to Wash an Organic Cotton Waterproof Mattress Protector

The cotton may be sturdy, but the waterproof membrane often determines the safest wash-and-dry routine.

Start with the sewn-in label

Follow the current manufacturer instructions rather than generic cotton-laundry rules.

Why drying temperature matters

Waterproof membranes can be more heat-sensitive than cotton. Sleep & Beyond specifically warns that medium and high heat can damage the TPU lining of its organic-cotton waterproof protector.

Practical sequence

Inspect the label, use the allowed wash setting and detergent, dry only at the permitted temperature, then confirm the protector is fully dry before remaking the bed.