NWT, never been removed from packaging. Will arrive with blue painters tape on the bag seal to ensure no moisture during transit given the season. Both of my kids have worn these year round through three years of age. They were one of the best investments we ever made for sleep. I got this one as an extra to rotate when our other one was dirty, but about a week later, my daughter decided she was done wearing them so it never got used. See the size chart on Woolino‘s website, however, I found them to be usable past the sizing posted with my slightly taller than average kids.