The ballistic nylon is *very* durable and will take scrubbing with a stiff brush and mild soap. Blot with towels/rags and let the case dry out. This should have the case looking good as new.

Waxed Canvas isn’t the easiest item on the planet to clean - part of the character-building process with Waxed Canvas is how it ages with scuffs, dirt, stains and all. Still, there are things you can do. This article gives you a good idea of how to clean and re-wax if and when you are ready. They suggest using dish soap and soft brush to clean, then drip dry, then take a hot hairdryer to heat up the wax and redistribute it. This will soften any blemishes and help with the dirt. The lines and crinkles on the waxed canvas are actually normal, and happens in shipping sometimes. All you have to do is use a hair dryer and you can flatten out the wax with your hand.