If you want a 100% stainless environment inside your bottle, but also need a functional attachment point then this durable cap is for you. Made completely out of 18/8, food-grade stainless steel, including the threads, so your drinks never touch plastic.

Features:
Durable, all stainless design
Leakproof
Dishwasher safe
Handy attachment loop
Creates all-stainless interior
Interchangeable with all Kanteen¨ Classic sizes