Minoura Mag 500D Trainer This magnetic bicycle trainer with seven resistance settings allows you to train inside in bad weather. Steel flywheel and magnetic resistance mechanism provide smooth resistance that simulates the feeling of riding on the road. Much quieter than traditional wind trainers, which makes listening to music or watching TV while you work out easier. Set it up anywhere; it's compact and doesn't need power of any kind. For adult-size road bikes (not mountain bikes) with tires 650 cm and bigger. 12 lb. 15"H x 22"W x 24"D. Imported. Sporting, Goods, Individual, Sports, Bicycling, Accessories, how to set up bicycle triner, mag bicycle trainer, magnetic resistance trainer, MINOURA 500D, minoura mag, MINOURA MAG 500D, minoura mag trainer, Minoura MAG-500D, minoura trainer