Notice and warranty: Not include a blood pressure machine. Money-back satisfaction guarantee, pls feel free to contact us via amazon, and we will solve your problem within 24 hours.Adult Extra Large Blood Pressure Cuff: Adjustable blood pressure cuff size. Suit adult arm 8.6-20.4 inches (22-52 cm) in circumference.Comfortable Arm Cuff: Constructed with comfortable nylon material, with TPU airbag not non-toxic and tasteless. Nylon soft hook velcro does not grab the hair for long-term usability.Compatibility Design: The replacement large cuff is suitable for all blood pressure monitors whose bp machine connect hole is 0.27/0.23/0.19/0.18 inches (7 mm/6 mm/5 mm/4.6 mm). Easy installation and adjustable.Package Including Replacement blood pressure cuff with a 4.6mm connector, 5mm connector, 6mm connector, 7mm connector, and our lifetime service.