I made one for my son. Used about 12 pairs of jeans. I cut the inner leg seams, flattened them out and then cut strips. I used the flat feld seams as decoration on some of the blocks. I aso used some of pockets on the blocks. I made all my blocks 10" by using the strip method. Didn't matter what sized strips just as long as the final block was squared to 10". I used a light weight fleece for the backing. No batting for as everyone else has said it will be a heavy quilt. Also follow suggestion about taking it to the laundromat! My son loved it. I think that will be my one and only as it's a lot of strain on the old hands.