The size is 31*20*40CM,made of Polyester. It has 3 insulated pockets that can hold most baby bottle brands, while the elastic side pockets are also suitable for water bottles, wipes, tissues & more! It's the ideal travel diaper bag for long trips with 2 built-in stroller buckles and one of the best baby shower gifts. Designed with thick padding and adjustable straps, our multi-function bag offers the ultimate comfort, easy organization, and room for all the needed mom and newborn essentials. With its compact structure yet huge-capacity space, you won't have to squeeze in anything from your diaper bag essentials. When the backpack is opened, it can be transformed into a baby bed.