They hold up
These are decent picks.  The string is easy enough for me to slide between my teeth and didn't break or fray more than normal.  The plastic part didn't break.  The only thing that I wish it had was more of a straight, pointy tip at the non-floss end.  The end is kind of short and a little curved, so it wouldn't work well at dislodging a piece of food where there is a bigger gap between teeth.  Also, the picks I received came in plastic baggies with no packaging, which was kind of weird.  But they work, so I gave them 5 stars.
Rating: 5 stars