Peak Design Dual Plate format_4x5 Includes a Manfrotto RC2 200LT-PL

Includes a Manfrotto RC2 200LT-PL plate with a 1/4" thread for camera mounting

Interior dimensions at the top opening are approximately 9x17x20cm

but it's a good working camera

Internal dimensions are approximately 15x30x50cm

It's possible that it's some kind of reference to the internet (the design is very early-2000s) but I don't know what this bag has to do with the internet other than the fact that you're reading this description

Peak Design Dual Plate format_4x5 Includes a Manfrotto RC2 200LT-PLThe Peak Design Dual Plate is a tripod plate designed to fit any Arca or Peak Design compatible quick release system. In excellent condition, with one Peak Design Anchor.