About two months ago I bought a 45 qt Yeti Tundra cooler from Captn Ron at the Skiff Shop. I had Seadek put on the top. I have used it about six weekends. It it a great product. I pre-cool it the night before with 5 to 10 pound of ice. Then it will keep 25 to 30 pounds of ice plus beer, food, etc. chilled for at least 4 days with very little ice melt. I said 4 days because that was as long as I was able to test it, I would guess you could get another day or two or more. Captn Ron was great to deal with. Best customer service I have ever experienced. He really cares if his customer is happy. Keep up the great work Ron, you have a customer for like here! Thanks Again!