It is easy to use. Straw can be hidden for storage when the users do not use. And straw can be detachable,which is easy to clean.With a durable design, double wall constructionmakes the drink, coffee, tea keep hot or cold longer, convenient touse for office, school and even in the house. Wide mouth is easy to put ice cube inside and clean. Non-slip silicone basehelp the users not to spill out the drinks.