Klean Kanteen Steel Cup - 4 Pack 295 ml / 10oz. This convenient four-pack comes with four 295 ml / 10 oz Klean Kanteen Steel Cups. These cups are constructed from 18/8 food-grade stainless steel so you don’t have to worry about them chipping, cracking or breaking. Best of all, they are lightweight and durable – perfect for summer picnics and backyard barbecues. In addition to being highly durable, the Klean Kanteen Steel Cup is easy to store with a nestable stacking design.