Size is Ladies' S. # Multi-Bet Running Long-lasting, solid support. A model that pursues knee joint stability based on hip joint support. Stabilizes the position of the waist, suppresses body axis sway, and supports leg movement quickly and stably. It also supports the calf muscles by lifting them from below. Recommended for sports where you want to maintain good condition for a long time. Uses sweat-absorbent and quick-drying "Coolmax® Fabric" for a refreshing feel.