Durable, comfortable, and packed with features: Despite its relatively unassuming appearance, Kajka is a modern trekking backpack in classic Fjällräven style. It has now been upgraded with improved features and an innovative, globally unique wooden frame that has significantly lower negative environmental impacts while maintaining the same stability and functionality as the previous aluminum frame. The carrying system with ergonomically shaped shoulder straps alleviates the burden of even very heavy loads. The user-friendly Perfect Fit Adjustment System can be easily adjusted to fit individual back lengths and shoulder widths. The wide hip belt ensures high carrying comfort, even on long hikes. The main compartment, which can be divided horizontally, can be loaded and unloaded from both the top and the front (front access) and is equipped with a snow guard. The bottom compartment can be used as a wet/dry compartment to keep damp and dirty clothes separate from the rest of the gear. There are practical zippered pockets on the lid, sides, and hip belt. The lid can be removed and worn as a hip or chest pouch. Two compression straps on each side, attached to narrow bars, ensure even and effective compression without blocking the opening of the side pockets. Material loops are located on the lid and bottom. A whistle is attached to the chest strap, and there is a rain cover with reflective elements. Kajka is praised worldwide by hikers and the specialized press. Among other accolades, the backpack was named Product of the Year in 2009 by the Swedish outdoor magazine Utemagasinet and was the test winner in the large backpack test conducted by the Finnish outdoor equipment retailer Retki in 2011.