Is it comfortable to drink from? Again ... so if you want a straw pick you might prefer the Owala or Klean Kanteen bottle.) But we prefer the Flex Chug Cap for its simplicity and coverage.

Klean Kanteen's products are all lead-free ... so they won't keep your drink cold for long. Still, the bottle's simplicity and functionality make it a great option. You can order these tumblers ...

It's also treated with Klean Kanteen's proprietary ... glass doesn't leach chemicals into your drink. But glass is heavy. Most glass water bottles (like the silicone-wrapped ones made by ...