An array of absorbent articles, in particular baby care articles, comprising at least two, preferably at least three, articles of different sizes, the articles having a wearer-facing side, a garment-facing side and an absorbent core (28) comprising an absorbent material (60) between the wearer-facing side and the garment-facing side. Each absorbent article is notionally divided by longitudinal axis (80), and has a front region (36), a back region (38) and an intermediate crotch region (37). The absorbent core comprises a pair of channel-forming areas (26) at least partially present in the crotch region of the article. The channel-forming areas are symmetrically disposed on opposite side of the longitudinal axis and are concave towards the longitudinal axis. Each channel-forming area has a length (CL) and a height (CH) and the length to height ratio (CL/CH) of the channel-forming areas increases with the size of the articles of the array.