The Collar comes with a pick and a leather cord. I ordered this end of november 2018 and wore it from the first day I got it.
I am a person that tends to forget where I put things - so the first days learning guitar with my pick, I put it somewhere - and couldn't find it again for the next days. Since I wear the collar, this has never happened obviously.
I haven't taken it off since. The leatherband gets a good scrub when I shower and I take the picks out (as you can put in a pick on both sides) and wash the inside. Nothing smells - and the rubber that holds the picks in place is still like the first day, so it's really durable.
I can only recommend it, as I now have my personal pick with me everywhere I go - and if there happens to be a guitar around, I can use my own pick. Nothing against other people's pick-choice, but it feels best when you can play with the one you're used to (at least for me it does).