The contractual duration begins with the purchase of the membership, is concluded for a specific period of 12 months and is automatically extended by a further 12 months after expiry unless it is cancelled on time. With this membership, you can book unlimited classes each month, starting with the day you first purchased your membership (e.g. Nov 7th, Dec 7th, Jan 7th, etc.). In addition, 1 shake each one-month-period is included in the membership for you. Unused shakes which are not used within each one-month-period, will automatically expire. The membership can be canceled by you up until one month before the end.