I like these because the magnet is inside the glove and the project looks nice and clean.
It looks like someone is trying to market these online but why buy when you can make?
Step 1: Turn Gloves inside out and pick the stitching out of the fingertips
I got the gloves at home depot, I liked them because they have the leather on the palm and another layer of fabric on the inside so it was easy to put the magnet in and keep it in its own "pouch"
Unpick the stitching about 1/4" on each finger in which you want to place the magnets.
Step 2: Insert the Magnet and Close the Wound
Next photo: stitch the gloves back together. Notice that the factory stitching keeps the magnet in the tip of the glove. so this is pretty easy to do.
If you want to place the magnet on one side you can put a couple of stitches right below it to keep in where you want it.