This Review Title is Definitely a NO and the content is: The smaller guard would not stay on so that resulted in a chunk of hair getting shaved off leaving a big bald spot. Definitely not okay. I really gave these a chance and tried again. BIGGER BALD SPOT! The larger size guard stayed on, but the smaller one pops off with any amount of pressure..There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.