The Tundra® 35 and Tundra® 45 Coolers deliver legendary YETI® toughness in versatile, adventure-ready designs. Both feature rugged rotomolded construction and up to three inches of PermaFrost™ Insulation, ensuring long-lasting durability and exceptional temperature retention—keeping contents ice-cold in sweltering heat or food warm despite cold, windy conditions. The Tundra® 45 offers added capacity for extended trips and demanding use, while the more compact Tundra® 35 is ideal for transporting provisions for a small crew and is portable enough to fit comfortably in an inner tube, making it perfect for river tubing and on-the-go adventures.