Maximize your aerobic base with the Spinervals Aero Base Builder DVD 5-Pack by Hopestar Productions! This special cycling dvd package contains all five of the 'Aero Base Builder' workouts in the Spinervals competition series including: Spinervals 16.0 - Aero Base Builder I (80 Minutes), Spinervals 17.0 - Aero Base Builder II (75 Minutes), Spinervals 18.0 - Aero Base Builder III (70 Minutes), Spinervals 21.0 - Aero Base Builder IV (70 Minutes), Spinervals 25.0 - Aero Base Builder V The Compilation (120 Minutes). Buy the Special 5-Pack and save!

Features:
*Spinervals 16.0 - Aero Base Builder I (80 Minutes)
*Spinervals 17.0 - Aero Base Builder II (75 Minutes)
*Spinervals 18.0 - Aero Base Builder III (70 Minutes)
*Spinervals 21.0 - Aero Base Builder IV (70 Minutes)
*Spinervals 25.0 - Aero Base Builder V The Compilation (120 Minutes)