Everyone is different but we usually recommend that the pads should be changed regularly (as with disposables), to avoid leakages and to feel nice and fresh. You should allow for a few pairs per day with a few in the wash.
Ideally you would need a total number of 12 or 18 pairs if you don't want to run your washing machine every day.
By adding extra reusable breast pads to your order, you'll never have to worry about running out. You'll always have a fresh, clean pair on hand when you need them, whether you're at home or on the go.