HJ2 Mini Backpack Mini Backpack can be converted to crossbody, sling, etc. This bp is approximately 9 x 9 x 4 has a magnetic closure. Back outside pocket. Inside slip pocket and card slots. Adjustable straps. Expandable snap closures on each side. Shell is 100% Cotton Canvas, Lining is Waterproof Canvas unless other wise noted. (a few have a waterproof or pul shell)