1.COMPATIBLE WITH Camera BATTERY: Package includes 10 Pcs plastic case for your battery. Please check your battery model and size before purchase. 2.LIGHT BUT DURABLE: Made of PP plastic, can withstand pressure and light enough to hold. Great protection of your battery. Our storage case also keeps batteries safe and dry. 3.GOOD PROTECTION: The batteries will be stored securely and stably, keeps water drops, dust and debris out of the case while in storage and transit. Avoid poor contact during use and helps to extend equipments life. 4.EASY TO USE: Easy to open and close, the special square shape is suitable for storage. You can carried in large quantities when traveling and exercising.