Chunky Cotton Knit Baby Toddler Children's "oversize sweater". STYLE 100% cotton, Batch runs TRUE TO SIZE. The style has a chunky knit "oversized look" BUT THE FIT IS TRUE TO SIZE. For example; A 9 month baby will fit well in the 6-12m sweater. The neckline, sleeve length and torso length is true to size. The arm width and bust width give the sweater its unique oversize emphasis.