I had never tried these before so I was skeptical that they would stay attached to my shirts.  One month in, they have held 100%.  They are uncomfortable but I am conscious of them while I walk and sit sometimes but it doesnt annoy me.  It absolutely accomplishes the job of keeping my shirts tucked in.  Ive been using them everyday since I got them.  I would definitely recommend this brand if you want a pair of shirt stays.