12-24 Months

JOWI pieces in 12-18 months and 18-24 months: pajama sets, sleepsuits, zip rompers, bodysuits, rompers, dress sets, lounge sets and two-piece sets.

This is when a baby starts crawling, standing and walking, and clothing gets judged on whether it survives the floor. Two-piece sets become more useful than one-pieces here, because a top can be changed without undressing a toddler who has other plans. Sleepwear in these sizes is snug-fitting by design, for the same safety reason as at 6-12 months.