Proper size for wearing: with good elasticity, flexible and adjustable, suitable for most women to wear; can be worn for extended periods without discomfort; please refer to the product size chart before ordering to select the correct size. Breathable mesh design: underarm sweat vest features ventilation holes and a mesh construction, providing breathability and sweat absorption; helps prevent sweat from soaking through shirts, protecting clothing and keeping you cool and fresh during warm weather. Long-term use: sweat-absorbing underarm pads are made from soft, comfortable yarn material; durable and resistant to breaking, wrinkling, or tearing; reusable and machine washable for extended use. Suitable for various activities: ideal for summer outdoor use such as jogging, running, camping, yoga, dancing, volleyball, and other physical activities; meets multiple needs and enhances comfort during exercise.