The Klean Kanteen leak resistant Café Cap 2.0 turns any Insulated Wide product into an instant to-go mug. Throw it in your bag or stash it on your bike, now it’s even easier to Bring Your Own hot or cold drinks anywhere you go. Made from BPA-free polypropylene (pp#5) and food-grade silicone, this cap is safe for use with acidic or hot beverages. Compatible with Wide Klean Kanteens only.