You can find this Popper Pouch on Etsy.
 
ONLY 1 AVAILABLE
 
Large Popper Pouch finished with a magnetic popper fastening, and a light grey lining. These pouches are the perfect size for make up, toiletries and more.
 
Measurements (all measurements are approximate):
Height ~ 13cm (5")
Width at top ~ 23.5cm (9.25")
Width at bottom ~ 16cm (6.25")
Depth at bottom ~ 7.5cm (3")