Standard width for a ring sling is between 26"-32"
If the mesh you bought is 60" wide, the easiest option is to simply cut it down the middle. Use the holes in the mesh as a guideline for cutting a straight line.
At this point, if you want, you may be able to use the mesh without rings as a "shorty wrap," depending on how much fabric you bought and what your
base size is. If you are between a base 5-8 and bought 3 yards of fabric, you likely have enough to use it for a
traditional sling carry.
If you want to use it as a ring sling, keep in mind that mesh is too slippery for a
no-sew ring sling, so you will need to sew your rings in place or use a hitch knot (like Jasmine's Hip Carry uses) to secure the shoulder.
Athletic mesh does NOT need to have the edges hemmed, but you may choose to fold and hem or serge the edges for a more finished look. This is completely optional, though.