I used this during the newborn period in the fall of this year. I had prepared a lot of undershirts, so I haven't worn either of them more than 5 times. I washed them with a special detergent from Akachan Honpo. There are some fold lines, and one tag has a crease. Since these items were used by a child, please forgive any minor imperfections. They are the snap-closure type, and made of all-season rib knit fabric, so I think they will continue to be useful.