The Tundra® 45 Cooler combines versatility with durability. This premium cooler is infused with that legendary YETI toughness — a durable rotomolded construction — and up to three inches of PermaFrost™ Insulation. Which is to say it's built to last and will keep your contents ice-cold even in sweltering conditions, or keep your campfire food warm despite the wind chill.