1. Single weight: about 50g 2. Size: 9.5x7.5cm (Earhole 5.5x3cm) 3. Material: cotton 4. Suitable season: spring / autumn / winter 5. Features: soft and comfortable, can not hide hair can be hidden in the hair, easy to use and lightweight 6. Suitable for: leisure, running, skiing, cycling, skating, snowboarding, etc.