Blu-ray Disc for Recording BD-RE 10 Discs Sony Corporation Capacity: 25GB 1-2X I recorded on these once for storage, but I never played them back, so I'm organizing them. I have formatted (initialized) them from my computer. Please note that the protective case is not in perfect condition. I plan to ship via Packet Post. There may be changes to Mercari delivery. Thank you for your understanding.