The contractual duration begins with the purchase of the membership, is concluded for a specific period of 2 months and is automatically extended by a further 2 months after expiry unless it is cancelled on time. With this membership, you can book a maximum of 8 classes within a one-month-period always starting with the day you first purchased your membership (e.g. Nov 7th, Dec 7th, Jan 7th, etc.). In addition, 1 shake per each one-month-period is included in the membership for you. Unused classes and shakes, which are not used within each one-month-period, will automatically expire. The membership can be canceled by you up until the last day of the respective 2 months duration.