NEW!! Texas Tech Red Raiders Freezable Crystals Mug - 16oz Freezer Glass Place in freezer one hour or more prior to use, when frozen crystals will turn a frosty white color 16oz mug combines state of the art freezability with team colors and graphics Filled with non toxic, refreezable crystals Eliminates the need for ice as the technology keeps drinks "crushed ice" cold for hours without the watered down effect of ice Not recommended for Dishwasher or Microwave