The Children's Place Baby Boys' MVP 2 Piece Set Body: 100% Cotton; Trim: 98% Cotton/2% Spandex Imported Machine Wash Made of 100 percent cotton in a rib knit. Rib-knit trim at neck, sleeve and leg cuffs made of 98 percent cotton/2 percent spandex Pre-washed for softness and to reduce shrinkage Tag less neck label For child's safety, garment should fit snugly. This garment is not flame resistant. Loose fitting garment is more likely to catch fire