Six (6) dvds made on a bicycle mounted camera. Producer is Opt Out Cycling Video shows the bicycle path for the trip (6 different trips) duration with the rider describing times when to stand and sit and for how long. These particular videos keep the rider at 60-80% of maximum sustained effort as merasured by heartbeat. By following the video you improve your muscular performance in prep for cycling season. A background musical score is provided. Description says these are indoor cycling dvds. DVDs appear near-new - front cover art looks like a copy.