Black Ice now offers a larger 12-pack cooler. Most soft-sided coolers have little insulation and many of them leak. Black Ice now offers the ultimate solution–the UC2. With a heavy duty 1000 denier Cordura nylon outer shell, and high-density open cell foam insulation, the UC2 is the toughest, most rugged soft-sided cooler we’ve seen. And it works. During rigorous testing, the UC1-B provided enough “recharging power” to allow our researchers to CoolSwap™ their Black Ice for over eight hours in 90°F+ heat. That’s not just cool–that’s very cool. Built to “12 pack” size (14″ x 12″ x 8″), the UC2 is perfect for recharging Black Ice.