Next to Rivendell bicycles, Rivelo's biggest seller is the all-copper water bottle we carry.
My fellow former Rivendell co-worker, Vaughn AKA Big Diffy, got us hooked on them when he was living in our attic the first summer we were open. He volunteered to find a source for them, and we were off & running.
Even people who don't ride bikes -yes, they exist- like them.
Fortunately for the rest of us, they happen to fit in most standard water bottle cages.
Recent studies have shown that bacteria hates copper, so that makes us like copper even more.
PS: They also look great, and take on a cool patina with time.