Why to choose taimasi 30oz & 20oz Tumbler set?</br></br> 2 different tumblers with straws: We combine 30 oz and 20oz tumblers together, they are preferred size for keeping hydrated or morning cup of coffee. It is best gift and perfect for using as a office coffee tumbler, travel mugs, hiking, home, road-trip.</br></br> 2 different ways of drinking: This tumblers with lids have transparent slider lids and they do have a straw lid option that might be better at stemming the flow of sticky drinks in case of an accident. It comes with 8 different size reusable stainless steel straws.</br></br> 2 different ways to hold: Comes with a strong removable handle. You can hold up the tumbler alone or hold it by handle </br></br> double wall vacuum insulated: Vacuum insulation technology designed to keep cold and hot relative to needs, it is able to keep your cold drinks ice-cold for up to 24 hours and your hot drinks warm for up to 8 hours. </br></br> Package: </br> 1 black 30oz tumbler</br> 1 blue 20oz tumbler</br> 2 slider lids</br> 2 handles</br> 1 tumbler cleaning brush</br> 8 reusable stainless steel straw & 2 straw cleaning brushes</br>