I am using the Odeon tote MM and I'm 5"2. I don't think the bag is too big and it should be perfect size for diaper bag. I use it as a work bag.I was able to purchase online (Canadian site) couple days ago. I’m debating to get a Speedy B 25/ 30 instead.. I’m planning to use it as a daily bag and to carry few baby stuffs (ie. wipes, diapers etc) and some personal items. Not sure which would be more suitable for my small frame 5’1.