Fjallraven kanken no 2 straight backs are healthy backs k nken was released in 1978 to help prevent back problems seen among swedish school children now over 35 years later k nken has straightened out millions of backs and become one of fj llr vens most popular products loved by generations of users k nken no 2 is made from durable double waxed g 1000 heavyduty with an inside back pocket in g 1000 lite just like its predecessor it is a durable everyday backpack just as practical to u