BLACK ICE™ Pack (multiple sizes)
 
BLACK ICE™ was designed to maximize the ice retention of any cooler while reducing freezing times. It works as an ice addition, to help refreeze top-melt and form block ice within your favorite BrüMate cooler. 

For full effectiveness it is recommended to line the bottom of your cooler in BLACK ICE™ and put regular ice on top. 
 
Recommended Configuration: For the BruTank, when using the drink tank it is recommended to use one 4lb BLACK ICE™ pack and one 3lb BLACK ICE™ pack. When using the BruTank without the drink tank it is recommended to use two 4lb BLACK ICE™ packs and one 3lb BLACK ICE™ pack.

Dimensions:
BLACK ICE™ 2lb - 10" x 2 1/2" x 2 1/2" 
BLACK ICE™ 3lb - 9 1/2" x 6 1/2" x 1 5/8"
BLACK ICE™ 4lb - 11" x 8" x 1 5/8"