I purchased this but never used it, so it's been stored at home. The capacity expands when you open the zipper, allowing you to store many diapers. It is currently sold out and no longer available for purchase. Main Body Size: <Before Compression> Approximately 16cm (H) x 24cm (W) x 16cm (D) <After Compression> Approximately 16cm (H) x 24cm (W) x 7cm (D) Wipes Pocket Size: Up to approximately 13cm (H) x 20cm (W) x 5cm (D) Estimated Diaper Capacity: <Newborn Size> Approximately 24 diapers <Size S> Approximately 20 diapers <Size M/L> Approximately 18 diapers <Size XL> Approximately 16 diapers