About this 3D model

I am a Vaper, and i like to carry extra Cartomizers and a Battery at all times. When I let them flop around in my pocket, the sockets would get full of lint and dust/dirt. I made this case to fit 4 Cartomizers or batteries or any combination of either in my shirt pocket. I haven't made a lid for it yet, but honestly, I don't think that it needs one. My parts stay perfectly clean throughout the day, problem solved.