Backpack Recommendations

Hi Fellow Mummies! I've recently levelled up to a mom of two, and I'm in need of a new diaper bag! My current one (20L) is too small, and I'm looking for recommendations. Can anyone suggest reliable brands for diaper bags that can fit: - 2 sets of breast pumps - 6-8 milk bottles - 2 wet bags with diapers and extra clothing - Breastmilk with ice pack - Kid's security item Thanks in advance for your help!