I bought a large quantity, but I only needed a few, so I'm selling the extras. I'm selling 11 pieces, but if you'd like to buy them individually, please comment. Color: White Material: Cotton Compatible with both powder and chunky chalk: These are refill bags for making chalk balls to hold anti-slip chalk used in bouldering, weightlifting, etc. They are compatible with both powder and chunky chalk. Easy to use in indoor sports facilities: These refill bags are drawstring type, making it easy to refill with chalk. The chalk dust is less likely to scatter, making them perfect for use in indoor sports facilities. Refill bags with moderate permeability: These cotton refill bags have moderate permeability, making them recommended for those who attend sports facilities that prohibit direct use of powder chalk. By putting chalk in these refill bags, you can prevent chalk dust from scattering. You can prepare plenty of spares: This set comes with 11 refill bags of the same size, so you can quickly replace a bag if it tears. This set is recommended for those who use anti-slip chalk in sports. Set contents: Set of 11 Size: Approximately 8.5 x 7.5 cm Color: White Material: Cotton *The color may appear slightly different depending on the monitor environment.