A cover is simply a waterproof shell. Think of it like a swimming cap or a raincoat - it’s just one layer of waterproof fabric to cover baby’s bum. Covers can be paired with any kind of insert. They’re often used with flats (the traditional cloths that our grandparents used on our parents) or prefolds.
(+) can be reused before washing; cheaper; fast-drying
(-) steeper learning curve
Read about the different covers we offer here.