Stretchy, form-fitting long-sleeved and long-trousered jersey set. - Color: Black - Style: Jersey set - Material: Stretch material - Design: Long sleeves and long trousers - Features: Form-fitting design This is posture-correcting underwear, but it's too tight, so I've only used it once or twice. I believe it cost around 8000 yen. It is warm. It's a size M, but I recommend it for those who wear size S, or for women. Thank you for looking.