Fiesty, no flannels, no homespuns, no fabric so thin you can see thru it..Fabric must be 100 % cotton...
The fabric can be any color,pattern, stripe floral, theme, etc Try to cut accurate 2.5" squares
I'm not sure but I think the info needed for the swap is on the first page of this thread.
and yes, you can send the same fabric as the first set..the sets can have different from the first. just to make sure each set has 50 different fabrics.. I hope this helps..