Keeps my shirts tucked in. TSA pulled me aside twice; no complaints other than that.
They look great, but are worn under your clothing. They keep my shirts looking awesome. However, with regular use, they will probably end up breaking. Mine did, so I just ordered another pair. Totally worth it. This keeps you looking better, and even makes you more confident, since you know it keeps your shirt looking good.
I have to admit that wearing these is a little bit embarrassing and I don't make it well known that I Own a pair. However they work just as described. They keep my shirt tucked in and looking very neat. They also hold my socks up which stabs my pants from getting caught on them when I stand up. Overall these are improved my professional look without any sense of discomfort. It is a little strange when you take your pants off as they feel a little bit in the way. I also switched over the calf socks to help with holding them up but I probably didn't need to do that once I bought these
I have used other shirt stays for my business casual wear that rip out hairs and damage my clothes. The Fancy Boy stays fixed all of that. Whats more is that when after over a year and a half of daily use when the rubber wore out, the owner sent me replacements at no cost.