Great idea, but some come with strap sewed stuck
I like th4e feature of being able to take it off and hang around my neck until I need it again. That way I don't lose it.  The problem was I ordered one and it came with one strap not adjustable because the sewing machine caught the strap in the stitching making it not adjustable.  So they sent me a replacement.  That one also had one side not adjustable because the strap was sewn in the stitching.  They gave me a refund.  I was able to pull on the stitching and get one unstuck, but with the other one pulling on the stitching made the loop holding the strap break off. They were still good to get me a replacement.
Rating: 4 stars