PANTS HAVE AN ELASTIC WAISTBAND AND THE LONG SLEEVED TOP HAS RUFFLED NECK AND BUTTON CLOSURE IN THE BACK. Made from 100% Peruvian Cotton For child's safety, garment should fit snugly. This garment is not flame resistant. Loose fitting clothing is more likely to catch fire. SIZING AND FIT This item fits true to size and will have a relaxed, comfortable fit when new. Garments that are 100% cotton will shrink when washed. We advise sizing up if you feel you are between sizes.