Ultra-lightweight and breathable baby set crafted from premium cotton-linen blend (labeled '优可丝' / Youkesi, a wood-pulp-derived lyocell fiber), featuring fine vertical ribbed texture for enhanced airflow and comfort. The long-sleeve top has a side-snap closure for easy dressing and a soft round neckline with subtle mint-green trim; matching cropped pants offer gentle elasticity at waist and cuffs. Ideal for newborns and infants during warm seasons, the fabric is certified A-class safety standard (China GB 31701-2015) for direct skin contact. The sheer yet opaque construction ensures modesty while maximizing ventilation—perfect for summer sleepwear, indoor lounging, or layering under light outerwear. Machine-washable, hypoallergenic, and free from harsh dyes or finishes. Designed for delicate skin sensitivity, this set combines functional simplicity with minimalist aesthetic appeal.