This 30oz Ouachita iCOOL Mojave Vacuum Insulated Tumbler is built to keep you hydrated everyday with its double wall vacuum insulated construction. The stainless inner wall keeps the liquid cold for 24 hours and the flip straw is for easy sipping and close to keep the tumbler leak resistant. The hinged swing handle makes the tumbler easy to be carried around from deskside to campsite, and the tumbler can be fit into most of the standard car cup holder for easy traveling.