To use this backpack, simply open the main compartment and start placing your loose sleeved TCG cards inside. You can neatly stack them to make the most of the space. For your MTG playmats, use the exterior pockets with the playmat straps. Just slide the playmat through the straps and secure it. When you're done with your game night or tournament, make sure to keep your backpack in a dry place. Avoid over - stuffing it to prevent damage to the pockets and straps. If it gets dirty, you can gently wipe it with a damp cloth. That's all you need to do to keep this awesome backpack in great shape for your future TCG events.