You don’t absolutely need a designated diaper bag to leave the house with a young child. But when you have a fully stocked bag at the ready, it’s much easier to get out the door and change your kid on the go.We’ve tested 50 diaper bags since 2017, filling them with diapers, bottles, and snacks, and we found a variety of options that are well suited for people with different priorities and budgets. We recommend:a feature-rich, machine-washable backpacka minimally priced baga tote pack that’s also a backpack and can be used long after the baby is out of diapersa luxurious, convertible diaper baga roomy fanny packa versatile portable changing pad that can turn any bag (like one of our tote bag picks, some of which are favorites among parents on staff) into a diaper bagWhatever bag you use, keep in mind that the American Academy of Pediatrics and most stroller companies advise against hanging bags on stroller handlebars, due to tipping hazards (though most diaper bag makers — and many parents and caregivers — ignore this warning).Everything we recommendThe JuJuBe Classic Diaper Backpack has handy features, such as a dedicated wipes pocket, an insulated bottle pocket, and a place for a changing pad. Marki Williams/NYT WirecutterThe Ruvalino Diaper Bag Backpack’s 19 pockets include two main zippered sections, three front zippered pockets, and a zippered pocket on the back. Marki Williams/NYT WirecutterPatagonia’s Ultralight Black Hole Tote Pack is made with a sturdy yet thin, lightweight nylon. Marki Williams/NYT WirecutterThe Caraa Baby Bag is made with a lightweight, water-resistant nylon. Marki Williams/NYT WirecutterBéis’s The Diaper Pack is roomy enough to hold the essentials for going out with a baby, yet it also lets you be hands-free. Marki Williams/NYT WirecutterSkip Hop Pronto Portable Changing Pad includes everything needed for diapering, and it’s compact enough to tuck into a bag of your choice. Marki Williams/NYT WirecutterThe JuJuBe Classic Diaper Backpack has handy features, such as a dedicated wipes pocket, an insulated bottle pocket, and a place for a changing pad. Marki Williams/NYT Wirecutter