40pcs soft sponge foam headphones earphone earphone pad covers Compatible with most earphones for MP3, MP4, CD, DVD, Phone, etc, EXCEPT IN EAR style Elastic, comfortable and durable Noise isolation Material: soft sponge foam Diameter: approx. 15mm Note for Half Cover & Full Cover: They have same size, Half cover is special for airpods and no effect senor of airpods. Other brand earphones recommend choose Full cover Version which is more comfortable. Package included: 40 pcs Sponge Tips Item packed by manual,may have 2~3 pcs missing. we hope you can understand.