Am giving only 3 stars because of length of flat sheet; I didn't wash so can't speak to softness or how much or little they wrinkle.  In the package sheets look and feel great, but I returned the set because Cal.King flat sheet is same length as King.  Our previous bed was a King and I had trouble keeping the top sheet tucked in (my husband is 6'5" and within a day or two of changing the sheets he had his side untucked), so when we were ready for a new bed we opted for the Cal. King.  One would think that manufacturers would give you a longer sheet for a longer bed (seemed logical to me), but that is not always the case; although longer flat sheets are available, they are hard to find and many Cal King flats are the exact same dimension as the King. flat.  I inadvertently ordered two sheet sets that look and feel very, very similar, I kept the set that had a longer flat sheet (104" vs 102" for this set.)  

Pros: Didn't wash so can't say.
Cons: Flat sheet too short to keep tucked in.