Coolshirt Endurance Ice is the perfect solution for keeping the water in your Coolshirt cooler ice-cold at the track. Endurance Ice contains a specially formulated, leakproof, long-lasting viscous gel refrigerant made with non-toxic ingredients. No more running to the store for more ice; Endurance Ice is the ultimate in refrigerant cold packs. Choose from 12-, 24-, or 32-oz. cold packs.
- Long lasting cold
- Efficient transfer of energy