Thin and well made. fits US passport or Iphone seven regular, plus it has room for money and other small items. You can bearly see it under a loose fitting shirt and its definitely invisible under anykind of jacket. The Passport bearly fits so if you a thinking of bringing something wider, don't get this one

Edited* I took away a star.  It takes about 10 extra seconds to close when you are keeping a passport in it because the passport bearly fits, which kinda reduces the hidden aspect because everyone can see you fiddling with the belt. Ten seconds doesnt seem so long but it feels like forever when you are in a foreign place. literally one or two more centimeters would have made this product perfect.

Still giving it a high rating due to low price and quality of materials