No loose threads, stright stiching.  washed before I put on mattress, they feel is crisp. The fitted sheet fits perfect on my 12" Mattress with some room to spear. If your looking for soft silky smooth sheets these are not for you. Also, the sheets are not wrinkle free, it's best that you allow your dryer to cool down before you remove from dryer.
 

Pros: Durable
Cons: some wrinkling