I may not have read the description very carefully but it was a pack of three which was a pleasant surprise. I have a factory Seagate for my thin drive that goes around the entire rim of the drive but not the top. I would say they have a comparable level of protection and if anything this case is a bit thicker and softer. This is good because it keeps the drive from slipping around when you're working on your laptop and moving around. Would buy again!
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