TheStack Hardware 5 milled Stack weights enable 30 weight combinations between 0g and 300g Dual-purpose weight case / phone stand Highly engineered training club - Adult size (41.5") Stack training requires a speed device that can measure swings without ball impact Recommended for use with the Stack Radar via Bluetooth connectivity (not included, sold separately) WHAT'S INCLUDED 1x TheStack Speed Trainer (Adult Size - 41.5") 5x Milled Stack Weights 1x Dual-Purpose Weight Case/Phone Stand 1x 1-Year Membership to TheStack App TheStack App Training Includes 1-Year Membership to TheStack App, accessible on iOS Adaptive speed training formulated by Dr. Sasho MacKenzie Guided workout timer for reps, sets, and rest intervals Custom speed metrics to track your gains Bluetooth Connectivity to integration devices. Hands-free data entry using voice entry technology for non-integrated devices Membership includes Bundled access to Stack Putting ($59 value) and the Learning Library Train and track up to twenty local (i.e. family) users under one login. App works with Family Sharing so the entire family can train easily on separate devices Connect to any other Stacker using Share Codes