I like this sling. It does what I need it to do. However, in pretty much every way, it is a little too large.
The ends form loops around each side of your yoga mat, held together by velcro. The loop that they form is too big for a tightly rolled mat, even when velcro-ed at its tightest. This is not a big deal -- I simply roll my mat loosely, which is probably good for it as it allows it to dry -- but if you need this to carry your mat as compactly as possible, it will not meet that need.
The sling itself is also very long. I believe this would allow you to carry it as a true sling, diagonally across the body. Even when I carry it this way, though, my yoga mat sits very low. (I should note that I am not especially tall - 5'4".)
As other reviewers have also mentioned, you do not have a choice in the color you receive, although this was not important to me.
Overall, this gets the job done, but just consider its size and color when ordering.
A distinctive, less bulky alternative to a mat bag, the supple yet durable polyester-fabric mat sling integrates a comfortable shoulder sling with Velcro closure straps. Fastens effortlessly around your mat and lets it breathe while keeping it securely rolled to and from your workout. Fits most fitness mats.