• Double wall vacuum insulation means drinks stay cold, iced or hot for hours.                                                                                                                                                                                                                                                                                                                                                                                                                       • Choose between our 14oz, 20oz, 30oz,40oz and 64oz options depending on your hydration needs.                                                                                                                                                                                                                                                                                                                                                                                      • The narrow base on all sizes (except 64oz) fits just about any car cup holder, keeping it right by your side.