Stick to your fitness plan year-round with the help of the Saris Mag+ indoor bike trainer. Its perfect for riding your bike indoors when its too cold, too wet, or too dark outside. Fits 650b, 700c, 26”, 27" and 29" wheel sizes and common road or mountain bike frames. Weight capacity (rider + bike): 300-pound Dimensions: 22.2" x 7.3" 20.5". Weighs 17 pounds.