Train Alignment Utilizing a Hand-Eye corrdination traning to balance your eyes and for alignment training. This kit can be valuable in addressing supressed eye such as lazy eye or squint and also convergence insufficiency, as well as enhancing physical strength and athletic prowess by widening the peripheral vision. Reaction ball included! Enhancing Athletic Performance Constructed with reative reflex ball, this kit serves as an effective tool for honing visual acuity and opening the peripheral vision within sport-specific stances, granting you an unparalleled competitive advantage. User-Friendly The kit offers user convenience by enabling usage within the confines of your home, and its short learning curve ensures swift adaptation. Superior Craftsmanship Engineered with patented clips to allow you to change card colors and practice with top-tier materials, Comprehensive instructions are included, and a responsive customer support system is in place to assist with any inquiries you may have. stress ball is included!