Material: 316Lstainless steel as bike body and the surface come with treatment of electrolytic polishing to anti-rust. Adjustable PU cushion for comfort. Adjustable PE Pedal for your size of foot. Parameter: Max open dimensions of 40.55''(L) x 23.6''(W) x 59''(H) (103 cm x 60 cm x 150 cm); Loading capacity: <300lbs( 150kg); Recommended pool depth: 3.5 ft.- 5 ft. (1.1m-1.5m); Weight of water bike: 33lbs. (15kg); Available heigh of people:47’’-77’’( 120-195cm) Function:This Pool Bike offers a unique design providing users a fun, invigorating, and effective workout. It is ideal for aquatic exercise classes, physical therapy, or a way to get fit in your own backyard pool. Pedal adjusts resistance: The water retaining plate moves up and down by the elastic nuts, which adjusts the resistance to your fitness level and the goals you are trying to achieve. It is the most resistant while the pedal is closed. Benefits: - Adjustable seat & handlebars of the height-Multiple levels of resistance - Barefoot use of the Pedal - Scratch resistant transport wheels to protect your pool surface- Durable stainless steel material.