Free Sample of K’nex Building Blocks for Kids
https://www.knex.com/sixflags/
Quote:
Thank you for requesting a free K’NEX sample. We need your parent’s approval before we can send your free K’NEX sample. So, this request has been sent to your parent’s email address. Your free K’NEX sample will be mailed once your parent has indicated his or her approval, and responded to this email.