Pronounced "jollies." these little stainless steel "beans" are designed to cool your coffee/tea/hot chocolate to the perfect temperature and then keep it there for up to 5 hours. I've started drinking chamomile and peppermint tea (separately. not sure those would work well together) and I have to admit that there is really nothing more annoying than spending 15 minutes waiting for it to cool off enough so you don't burn yourself and then being left with cold gross tea 5 minutes after that first "perfect sip." So, when I saw these little shining babies I immediately knew they would make a very nice addition to our tea/coffee routines.