Health Promotion / Rejuvenation Increased Energy / For those who feel cold easily There is a pressure point about two finger widths below the navel. This is called the "Tanden." Covering the Tanden with red underwear stimulates it, strengthening the flow of "Ki" (life force) and improving blood circulation. Made in Japan - Color: Red - Size: LL - Material: 100% Cotton - Style: High Waist Thank you for viewing.