response: They can be machine or hand knitted.
history: Cardigans make me look dapper. What I know about this garment is that it is has an association with the Roaring Twenties college culture Do you know if there are any made out of a material other than cotton? The truth is that I don't know that. I do know that they are knitted though Are they knitted by hand?
knowledge: It may be machine- or hand-knitted.