Sorry! This item Is out of stock. ( Klean Kanteen - Klean Kanteen Stainless Flat Cap )
For the purist looking for a sleek, low-profile look and a 100% stainless environment, the Stainless Flat Cap is the way to go.
Made using BPA-free polypropylene (pp#5) on the outside, the inner threaded part of the cap is 18/8, food-grade stainless steel so your drinks never touch plastic. It's the same high quality, stainless steel we use to make our bottles, so it’s totally free of BPA and other toxins.