Want to sip your drink while you're on the move? Klean Kanteen Cafe Cap For Kanteen® Wide converts your Insulated bottle into a splashproof to-go mug with one quick twist. It's made from BPA-free polypropylene (pp#5) and is safe for use with acidic or hot beverages. The Café Cap pops apart, which makes it super easy to clean. No more crusty coffee funk or drink flavors you just can't scrub clean! Just pop the two pieces apart, scrub-a-dub-dub and you're good to go.