VonShef Roll Top Backpack for Picnics, Hiking & Day-to-Day. Keep your food and drinks cool for up to six hours with this 26L insulated backpack. It features a food-grade aluminium lining and padded shoulder straps for comfortable carrying. The roll-top closure maximizes capacity and can be adjusted to secure contents. The removable cooler insert allows you to convert it into a regular backpack for everyday use. Perfect for picnics, hiking trips, or daily commutes.