Assuming that Vaude named the Wizard 24+4 after the English word for wizard or sorcerer, there must be something to it. And indeed, there is! A lot, in fact: The "+4" in the name of the Wizard 24+4 refers to the additional volume in liters that can be added to the base volume of 24 liters through a zipper that runs around the pack. The length of the shoulder straps, and thus the back length, is also adjustable. These can be individually adjusted via a Velcro closure on the back panel from size S to XL. The mesh ventilation of the daypack works in the same way. Depending on the need for ventilation and the desired pack volume, the back panel can be shaped accordingly, whether more ventilation or a close-to-body fit is preferred. The front pocket of the backpack extends over the entire area and provides additional storage space. The rain cover is conveniently stored in a bottom compartment, but the material is also water-repellent, keeping out a few drops. Thus, the Wizard 24+4 from Vaude is a great companion for day hikes, one-day summit tours, or a trip to the lake.