Petit Bateau 3m 60cm Fleece Romper Pink Collar with floral pattern The design covers the feet, so no socks are needed. There is yellowing around the collar, so it is offered at a reduced price. Made of soft, high-quality material, it's warm and perfect for outings during this time of year. Recommended for newborns up to around 3 months old. You'll need lots of changes during this period, so how about it for a one-month checkup?