100% Cotton. Please check our sizing chart on the side image for best fitBABY ONESIES UNISEX:Five grey short-sleeve onesie bodysuits crafted with love in baby-soft cotton featuring nickel-free snaps at reinforced panels for baby’s soft and sensitive new skin. Our gray onsies for baby are perfect for boys and girls clothing.LAP SHOULDER CONSTRUCTION: Makes dressing baby a breeze with maximum stretch when pulling over your little love's head. Ropa de bebe niña, Ropa de bebe niño, bebes recien nacidos, ropa para bebe.ADORABLE COLORS AND PATTERNS: An essentials item for new parents, Ideal for baby showers and registry, layette set gift giving and new infants. Hand-me-down quality lasts wash after wash. Your babys will grow with us from new born 0 to month 0-3, 6 and 9.HAND- ME-DOWN QUALITY: Lasts wash after wash. Combed and ring-spun for durability, softness and no-pill washing. Machine wash warm, tumble dry low. Solid color onesies as well as cute designs with your child in mind.100% SATISFACTION GUARANTEE: We strive to offer incredible customer service and want to make sure that your most precious child loves our product.