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 4 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.). Unused classes 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 month-period.