You absolutely HAVE to wear it cross-body. Otherwise with the strap attached at bottom on one side and top on the other the purse leans out and then slides on your shoulder until the weight is at the bottom. IE Your purse ends up parallel to the ground and things can fall out of any unsecured pockets. I found myself constantly grabbing the top of the purse body to hold it upright. Also the strap buckle placement left much to be desired.
I carried a iPad in it and found that there was more then enough room - too much actually.
I thought the design was innovative but after using for several months I would not recommend it at all.