Visions top-of-the-line R2250 Semi-Recumbent Bike features a heavy gauge step-thru frame that allows easy entry into the workout position. It uses Visions ECB-Plus™ magnetic resistance system and a 24-lb. flywheel for the smoothest possible resistance changes. This bike also has our Quiet-Glide™ drive system with a large eight-ribbed Poly-V belt, creating less tension and, thus, extending the life of the bike. The R2250 offers a breathable Comfort Arc™ Mesh seat with an adjustable tilting seatback to keep users cool and comfortable.