Please note, this item does not include water bottles. Due to most customer feedback requesting two water bottle attachments for a more secure fit, our factory will upgrade all products starting from September 28, 2022. We will gradually replace one attachment with two, and due to the large volume of shipments, there may be random shipments of two or one attachments. If you have any special needs, please contact our customer service. Thank you for your support!Please note, this item does not include water bottles. Due to most customer feedback requesting two water bottle attachments for a more secure fit, our factory will upgrade all products starting from September 28, 2022. We will gradually replace one attachment with two, and due to the large volume of shipments, there may be random shipments of two or one attachments. If you have any special needs, please contact our customer service. Thank you for your support!