Thank you for looking. This is a handmade mini bag. Width: Approx. 15 cm Height: Approx. 21 cm Height including handle: Approx. 35 cm No gusset. The inside is light blue fabric, and the back is dark gray fabric. Please check photo 6 for size reference. How about for outings with just your wallet and smartphone? This is a handmade item made by an amateur for fun. I made it carefully, but please understand that there may be slight distortions, variations in stitching, or minor size differences. Thank you.