Klean Kanteen Stainless Steel Loop Top

If you want a 100% stainless environment inside your bottles but also need a functional attachment point, the Stainless Loop Cap is the perfect choice.

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.