Fabric is unhemmed on the sides, and is just over 18 inches wide. The floats are slightly bigger, with 6 floats per inch, roughly equivalent to 12 count aida. This makes it easier to see and also easier for the needle and thread to slide through.
It is sold by the yard, so when placing your order, simply indicate the number of yards you would like. FYI, two yards makes three towels when towels are cut 24″ in length; this might be helpful information to keep in mind when ordering.