Love them or hate them, nappy bags are a must for any parent with a baby in tow.
First of all, You should think about how you'll be able to put it onto your stroller: down in the stroller's basket, or would you like to hang it on the stroller's handlebars? If the latter, you should go ahead and buy a diaper bag that includes stroller straps, like the one we suggest. We suspect you'll use that feature a lot. Of course, always use caution when hanging the diaper bag on the handlebars of your stroller: when you take your baby out, the stroller will flip over backwards (unless the bag is half empty)! So definitely make sure that the stroller you choose has a nice large basket to fit your diaper bag.
To figure out how big of a baby diaper bag you'll need, put some thought into how many things you'll want to be carrying around. It's not just for baby diapers and baby essentials (don't forget nipple creamlotions, baby sunscreen, and maybe even small breast pump), but the baby bag will also be responsible for holding the contents of your purse unless you plan on carrying both the baby bag and your purse around all day (which we don't suggest!). So that means you'll want to make sure the baby diaper bag is big enough to hold all of the baby essentials along with things like your wallet, keys, lip balm, tissues, makeup, sunglasses, and anything else you carry around in your purse on a daily basis.
Great addition - insulated pocket. What can be better than putting wet dirty piece of cloth separately from other things?
Also, pick a bag that will last you both in durability and style. If the bag only looks good with certain outfits, you'll find yourself frustrated or wanting to buy multiple bags. A black, blue or gray, or one with relatively neutral colors/patterns can work with nearly any outfit.
Of course, some of the really stylish baby diaper bags can also get kind of expensive; so maybe dig into some of those gift cards you might have hanging around from your baby registry, or put your favorite on a new baby registry if you haven't had your baby yet! Finally, it's worth considering a diaper bag that is water resistant, to protect the bag's contents from damage during rain or accidentally being set on a wet surface.