I don't pre wash,but haven't had any probs.In fact,all my 1st quilts were made with Walmart fabrics.They've survived several diff moves & being hung on the walls for both DDs & the 3 Grkids use theirs like old favs....to scrunch up on the floor for tv watching & as a bed cover most nights.They must be 12 yrs old or so.Just realized, it must have been better fabric than I knew. :-)