1. The protective cover is beautiful, dustproof and antifouling 2. Soft and comfortable, and will not feel tired after wearing it for a long time 3. Good air permeability, not easy to crack 4. Easy to replace 5. Good quality and long service life 6. Net cloth in the middle of the productSpecification: General Compatible with Sony: MDR-ZX770BN Package Weight One Package Weight 0.05kgs / 0.11lb One Package Size 10cm * 8cm * 5cm / 3.94inch * 3.15inch * 1.97inch Qty per Carton 300 Carton Weight 9.60kgs / 21.16lb Carton Size 52cm * 52cm * 50cm / 20.47inch * 20.47inch * 19.69inch Loading Container 20GP: 197 cartons * 300 pcs = 59100 pcs40HQ: 457 cartons * 300 pcs = 137100 pcs