This A-Class baby set features ultra-soft, breathable fabric made from premium mulberry silk (labeled '优可丝' / 'Yoke Silk', with '木桨源' indicating wood pulp-derived viscose or lyocell blend), ideal for sensitive infant skin. The set includes a long-sleeve snap-front top with gentle ribbed stripes and matching harem-style pants, both in pale sky blue with fine white vertical pinstripes. Design highlights include a rounded neckline, reinforced shoulder snaps for easy dressing, elasticated waistband on pants, and rolled cuffs—ensuring comfort and mobility. The lightweight, semi-transparent mesh-like texture (emphasized by '轻薄透气' = lightweight & breathable) makes it perfect for warm seasons or layered wear. Ideal for newborns to 12 months, this set supports daily wear, naps, and gentle outdoor outings. Fabric feels smooth, non-irritating, and wicks moisture effectively. No visible brand logo beyond the small woven tag on the chest—suggesting a private-label or domestic specialty brand rather than an international designer.