Mayla F.wrote a review of Nite Ize S-Biner 3-Pack on July 28, 2017
Familiarity: I've used it several times
The more I use them, the more I find a use for them. I like these better than a regular biner because the keys/water bottle etc. are on one side of the biner and than you use the other side to clip on and off of your pack or whatever.