JJ Cole System Diaper Bag The JJ Cole System Diaper Bag is the ultimate for parents on the go. It attaches easily to a stroller by wrap a loop around the stroller. Simply thread the clip through the attachemtn hole and pull tight. Once child is in the stroller, clip attachments to D-rings and attachment is complete. The System Diaper Bag from JJ Cole is terrific because it features a changing pad and tote. It even has a bottle holder.