MatPak Yoga Bag, Pockets for Yoga Block and Gear Use like a backpack, with both padded shoulder straps Use like a mat sling, with one padded shoulder strap Large zippered pockets for towel(s), personal effects, phone, and more Dedicated, expandable pocket for a 9 x 6 x 4 inch yoga block; mesh water bottle pouch Modern and functional design makes this an ideal yoga mat bag