This item features a gentle feel characterized by its softness and stretch, achieved by using fine cotton yarn in a rib knit. The neck is seamlessly integrated with the body in a single-piece pattern, gently protecting the delicate neckline. The neck and body are double-layered, while the sleeves are single-layered, allowing for comfortable wear under jackets or blouses without bulk. Those who are sensitive to air conditioning can wear this even in summer. It's also great for shielding against air conditioning on transportation during travel, and it's an innerwear piece that will be useful for three seasons: spring, summer, and autumn. Size...L