Brand: ReD Vitaltech V-neck inner short sleeve, improved for stiff shoulders - Brand: ReD - Color: Black - Size: L - Features: Circulation-promoting fibers Suggested Retail Price: ¥5,940 Black innerwear with blood circulation-promoting function. From ReD, known for 24-hour recovery wear. MTG's unique special fiber "VITALTECH," which contains eight natural minerals, directly emits far-infrared rays to the skin, promoting blood circulation. With the two major effects of "blood circulation promotion" and "fatigue recovery," simply wearing it turns every moment of your daily life into recovery time. This product (recovery wear) complies with the general medical device "Home Far-Infrared Blood Circulation Promoting Clothing" established by the Ministry of Health, Labour and Welfare. Promotes blood circulation, fatigue recovery If you are looking for this, please consider it.