On a recently trip to Baja California, we brought along a new ice chest. We first heard of this new cooler from John Marnell who read about it in a magazine.
On Tuesday, December 29, at about 4:00 p.m., we put a 12"x8" block of ice into the "EXTREME" Cooler. Everything in the "EXTREME" cooler was prechilled. We also placed a block in my regular cooler. When we got home Sunday, January 3, at 11:00 p.m., everything was still cold, and we had a piece of ice left that was about 2-3" thick by about 6" square. Our regular cooler had to be replenished with ice on Dec. 31 at about 10:00 a.m. and was almost room temperature when we got home.