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 (41.5") or Junior (38.5") version (see Fitting Juniors) Stack training requires a speed device that can measure swings without ball impact. TheStack App Training Includes 1-Year Membership to TheStack AppNow on iOS, Android (Beta), and Chrome Web (Beta) 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 (iOS), Stack Wedging (iOS), and the Learning Library (All Platforms) 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 Access TheStack App from the App Store when your order arrives. Requires iOS 15.0 or newer. Now available on Google Play Store for Android or access it on Chrome Web. See our FAQ pages for questions about subscriptions. * Launch Monitor not included