Refreezable & reusable ice pack that provides a long-lasting, mess-free ice substitute Dynamic, non-toxic gel delivers extended cooling performance Large 6-pound size fits virtually any medium-to-extra-large cooler Modular design for a customizable chill To have an ICE day, we recommend you pack a medium (16–30 quart) hardside cooler with at least 1 Performance Ice Large Brick, large (48–75 quart) hardside coolers with 3 & extra-large (94–165 quart) hardside coolers with at least 2