A set of 4 lightweight and dishwasher-safe stainless steel cups. Each set stacks neatly together and comes with a bamboo top with a built-in bottle opener that doubles as a cutting board perfect for cutting up limes or mint for your drinks on-the-go. The tough nylon strap keeps everything together for easy carrying. Dishwasher-safe (cups only) Bamboo top with bottle opener Each cup is individually marked so you can always tell which is yours Nylon strap for easy carrying on-the-go Each cup is made from 0.4mm thick stainless steel 16.9 fl oz capacity per cup