The first advantage of Calf Compression Sleeves for runners is in fact that they do compress.
In studies that have been conducted, the evidence has overwhelmingly pointed to compression calf sleeves reducing swelling. This is especially true with people that spend much of their day standing. Runners fit that bill. If swelling is an issue for you, compression sleeves can help take the inflammation down.
Another benefit of compression, is that it can help to alleviate minor pains such as shin splints, tendonitis, and cramps while running. However, wearing compression calf sleeves will not make the problem go away. You must use other measures to actually cure yourself of injury. While wearing compression calf sleeves is not a way to mend the issues that cause pain, they can help you get through a workout or race without having to deal with a lot of discomfort.