Trainer for All Seasons. Stick to your fitness plan year round with the help of the Saris Mag+ trainer. It is the perfect way to keep your legs warm when it's cold, dry when it's wet, and safe when it's too dark to ride outside. With this turbo trainer, it's easy to turn your bike into your go-to calorie burner no matter the season. Simply attach the handlebar-mounted shifterto change resistance during your workout without having to leave your bike. Want to train with Zwift or Rouvy? All you need is a speed sensor. Visit oursetup guideto learn how to get started. Do you own an older Mag trainer and want to add the remote shifter?Purchase the standaloneMag+ Magnetic Remote Shifter #9903. Product Features Magnetic resistance unit provides a quiet and frictionless ride. Linear resistance boosts workout intensity to match each pedal stroke and gear click. Mag+ comes with convenient, adjustable handlebar-mounted shifter. Compatible with Zwift and other indoor cycling apps. Includes one month subscription toRouvy virtual training app