The Hopper M20 Soft Backpack Cooler allows you to put the day on you back - literally. This hands-free cooler bag comfortably straps on like a backpack to keep you mobile, while a strip of ultra-strong magnets keeps the cold locked in. The new MagShield Access opens wide so you can easily load in beer, ice, or your favorite sandwiches. The Hopper M20 is the cooler that goes where other coolers can't.