Yoga gear: it is notoriously difficult to find a decent gym backpack that is big enough to hold all of that awkward gear that includes long and narrow mats, and big and bulky blocks. What we have discovered is that most of these options out there on the market are actually big enough to hold a basketball, and if they can hold a basketball then they should be big enough to hold a bulky yoga block. While mats will most likely not be able to fit into the main compartment of any of the options on our list, there is some design out there that have a series of straps located at the bottom of the main compartment that is perfect for affixing you almost impossible to tote yoga mat.