At first glance, it's a regular high-neck innerwear, but it's actually a multi-functional garment that combines a neck warmer and a belly band. Despite being a cotton-blend material, it's thin, soft, and incredibly stretchy. Furthermore, due to its molded knit construction, it stretches well in all directions and gently conforms to the body. The high neck and abdominal area are double-layered, and heat-retaining yarn is used on the skin side, creating a warm effect as if you were wearing a neck warmer and a belly band.