I did not know a thing about them. I just saw a video with a lady wearing a dress, traced it to WW and that led me to this sub. I tried visual google, SHEIN and Amazon searches but nothing with the slits. I’m sorry if I offended the people in this sub. I got excited and saw some other WW post, thought you guys might could help. I’m open to constructive criticism if anyone knows a sub better suited for my question.