1. Fabric: 130G nylon-spandex, moderate thickness, not cold in autumn and winter, not stuffy in spring and summer, upgraded moisture absorption and quick-drying function 2. Heat-cut and traceless, comfortable and light; thin shoulder strap design, more sporty 3. Two-stage chest compression film, three-dimensional non-empty cup, more fitting; coaster semi-fixed, anti-twist, no shifting, easy to wash and dry; Oxygen Hole Cup 3.0 version, filled with split puff coaster, with hundreds of ventilation holes, breathable and not stuffy 4. Sporty style, color matching design, more suitable for campus sports scenes