I tried these on a few days ago and loved them. Should have purchased but did not. Went back today and the M is gone.

When I was looking through the available ones in the store tonight, I noticed that some of the tags said 2.5” and others said 4”, but when I compared two, the length seemed very similar.

I looked online after I got home, but do not see this style listed - just the regular Speed Up.

Any info would be greatly appreciated!