Other carriers I have: Baby Bjorn Classic and Ergo Baby Performance Carrier.
This bag by no means replaces the Ergo, since it is not quite as comfortable for wearing for more than an hour or so at a stretch, but the overall convenience and design are excellent. It is ideal when used as a supplement to a stroller.

Pros:
- Egg-shaped insulated pouch is quite versatile - I easily fit a Nuk sippy cup or bottle+ice pack inside.
- Good sized bag, big enough to hold the necessities (5 size 4 diapers, travel wipes case, 2 burp cloths, small hand sanitizer, extra playsuit, bottle or sippy cup, snacks or pouch of baby food, a small toy, my wallet).
- Well designed pockets inside that help organize without adding bulk or taking up space inside.
- Outside bottle pockets held a 20 oz. water bottle fairly securely (enough to free up my hands)
- As a bag only, can be worn 3 ways. Has a nice wide strap. Rerouting the strap excess into the guides is fairly... Read more

This bag is great. I am a mom on the smaller side with a 10 month old who is 24 pounds. Carrying her around for a long period of time is not an option for me! The carrier feature is very handy when you need to do quick errands and don't have time to fumble with a stroller or there are no shopping carts around. I have also used it when at the mall and my daughter wants to get out of the stroller and be held.

Here is what I love about the diaper bag:
- It has plenty of pockets and holds what I need without being too heavy to then carry around all day
- It has an insulated pouch that snaps on to the bag strap (or your stroller handle) for easy portability and access

Here is what I love about the carrier:
- It can hold up to 35 pounds (more than my bjorn which only got used a few times before my baby outgrew it)
- It is always with you
- It is very easy to get your baby in and out of it
- You still have access to your diaper bag

I just received my Sidekick Diaper Bag and was so excited to start using it. As a mom, you tend to collect EVERYTHING for your baby and take everything with you whenever you go somewhere. I traded in my purse for a diaper bag and have to minimize what I bring for me so there's enough room for my baby's things. Then on top of the diaper bag, you need a car seat, stroller, baby carrier, etc. Pretty soon you don't have enough hands for everything. This sidekick bag solves those problems. The bag is convenient just in itself to carry all the things you need on a daily basis for the baby (fits quite a bit of stuff) and is stylish too. But then, TA DA... it becomes a baby carrier also. It goes over the shoulder so the weight of the baby doesn't hurt your shoulder/arm and is sooo easy to convert from bag to carrier and back to bag. We took this to the zoo for the first time with my 3 month old and it was great. He was able to look at all the animals AND i had his diaper bag too! Perfect! No... Read more