I noticed that most of my bags have zip-top closures. For example: Zoe, Carly, Heritage Stripe, Leah and Legacy. I am considering the Parker shoulder strap because the leather is so very soft and it is on clearance! But it only has a center magnetic snap closure. So I am not sure if that will work for me or not. I just feel that my stuff may fall out all over the place. Closure types: Zipper top Breakaway zipper Snap Magnetic Open Other?