With the Klean Kanteen Steel Cup - 10oz, you have a versatile, durable and a more eco-friendly option for enjoying your favorite beverages. This BPA-free cup can be used at home or outside to sip cold and warm fluids. Combine with either a straw lid or tumbler lid from Klean Kanteen to extend the possibilities with this 18/8 stainless steel container. It is dishwasher-safe and easy to clean, thanks to rounded edges and an electro-polished interior that's free of toxins. Say goodbye to leaks and hello to the confidence of knowing that your fluids aren't touching plastic.