I just started playing MTG and only have a few deck and only really care to carry around 5 anyway. This does that perfectly, I have a sidekick, squire, a custom box that is only slightly smaller that the side side, and a generic clear from Amazon, they all fit perfectly with a minimal wiggle room. I could fit a fifth box is I only used the generic clear ones or the “frosted” boulder deck boxes, the second compartment holds a small box (gathering all hydras sld box)to hold dice and counters, and I put about 10 toploaders and some perfect fit sleeves in the smallest compartment in the front, and I can hold 2 playmats. The only downside is as you begin to collect you probably have binders for collection and trade, you’d then need to upgrade or carry another bag. All in all, I believe this is the best beginner or light travel deck holder and wouldn’t be a bad guy to keep around even if you upgrade.
