FlexiFreeze Re-Freezable Replacement Panels for Ice Vest An extra set of ice panels for your FlexiFreeze Ice Vest will ensure continuous cooling when needed. The Velcro attachment makes for quick removal and installation. Keep an extra set in the freezer and you'll always be cool. Patented FlexiFreeze Ice Vest harnesses the power of 96 pure water ice cubes into 3.5 pounds of body core cooling efficiency. FlexiFreeze Ice Sheets are made with pure water because it is far and away the most efficient cooling medium. Compatible with FlexiFreeze Ice Vests: (item #: FF0IV02-0IVNV, FFVV2-NV, FFVZP-NV)