Straight shoulders are happy shoulders! Kånken was created way back in 1978 to help prevent back problems among Swedish school children and quickly became a common sight in preschools and nature schools across the country. Today, 35 years later, Kånken has straightened millions of backs around the world and has become one of Fjällräven's most beloved products. This classic backpack is suitable for both trips to and from school or work, as well as trekking and travel. The material is a durable and lightweight Vinylon F fabric that can resist dirt and moisture. The spacious main compartment has a large zippered opening, making it easy to store and unpack. It has two flat side pockets and a zip pocket on the front, perfect for those tidbits you want to keep close at hand. The included PE foam seat cushion is stored in the internal back pocket where it prevents the contents of the pack from hitting your back and is always on hand for when you need to take a break and sit down, wherever you are. The carrying system is simple but practical and consists of handles on the top and slim adjustable shoulder straps. The logo on the front is reflective. It also has an address label inside the main compartment.