Miraclekoo Natural Insect Repellent Moth-proofing Wood Balls ,25 Pcs Diameter : 2cm / 0.78", Weight : 20g Protects against moths, mildew and mustiness and lavender enhances freshness Material : Wood The wood ball manufactured by pure solid wood,so it is a normal phenomenon that some wood may cracks,and it does not affect the effect. Package Content :25 x Wood Balls