Thank you for viewing! Slim Feather Upper Arm Compression Inner M size This is an authentic product purchased from the official website. Purchase date: January 2026 Brand new, unused, unopened Color: True Black, Black Size: M Sleeve length: 24-30 cm Shoulder width: 36-43 cm Style up with this upper arm compression inner that has been proven to increase calorie consumption! The compression support tightens sagging upper arms. In addition to correcting a hunched back, the uneven texture on the back of the fabric provides edema (swelling) care and warmth♪ This is a popular product that is talked about on YouTube, TikTok, Instagram, etc. Recommended for those who want to correct rounded shoulders and posture, and those who want to easily shape up just by wearing it. No comments, instant purchase OK. Thank you very much.