Towel(s) for sewing project (Balbriggan)

Hello, I'm looking for a large towel or several small ones to sew a cover.
I want to make a cushion cover. For this I would like a fabric of about 48 x 32 inches therefore I can sew towels together to make this size.

I can collect from Dublin 1, Dublin 2 or north Dublin along the train line to Balbriggan ideally.

Thank you