These vacuum insulated tumblers are perfect for hot or cold drinks.  They are fully straight tumblers that will fit in your car cup holders.  Each one is made by hand, so customization is possible.  Additional customization will add $4.
 
Each tumbler comes with a rubber base and a straw.  These tumblers are not dishwasher safe as the dishwasher can break the vacuum seal and allow water to seep between.