The bag is made of plastic-coated leather and fits very well down to the Sony RX100. In the upper part is for my taste a little too much space between the camera top and bag, here it could be something "skin-tight". While the haptic quality of the bag is quite good (though not as in leather bags of 30 years ago), the quality of the strap is slightly worse. With the original bag of Sony I can not compare, because I do not know.
Overall, I am satisfied with the bag and use it like, especially since the naked RX100 is not easy to grip. After opening one of the two clips you're ready to fire and does not have to create the fiddly wrist strap.