Originally I had registered for a standard purse style diaper bag at Babies R us. A friend told me how much she loves diaper back packs because they are so much easier to haul around and hook to the stroller. They also look much more gender neutral and husband friendly. I know my husband would rather where a backpack than carry a giant purse! I got my ERGO backpack in the "camel" color. I seriously love it. Its not oversized but still plenty big enough to carry everything. It works great for an active family and is just so easy and "fuss-free!" Also, its really cute!