Cool Shirt Endurance Ice
Water-circulating driver cooling systems like Cool Shirt work best when the cooling media has relatively little surface area and a lot of mass. Small ice cubes transfer heat quickly, but run out of cooling capacity in a short time -- leaving you with lukewarm water in your cool suit! Endurance Ice offers efficient heat transfer with a low surface-to-mass ratio for long-lasting cooling.
COOL SHIRT Endurance Ice is a long-lasting, economical alternative to ice. The leakproof bag is filled with a non-toxic gel that stays cold longer than ice cubes. The bag is reusable indefinitely, so you can actually save money over buying and tossing out bags of ice every weekend.