Football Tracker Vest: This is a football position tracker vest, designed to monitor and record your performance during the game. It's an essential tool for any serious football player looking to improve their skills.Material: Made from pp and polyester, this tracker vest is built to withstand the rigors of football matches. It's lightweight and comfortable, allowing you to focus on your game without any distractions.Breathable: Designed with sweat-absorbing and breathable material, this vest keeps you dry and comfortable during workouts or games.Festure: The soccer tracker vest features an fabric that ensures a comfortable fit while allowing full range of motion during activities.App Control: This tracker can be controlled via an app on your smartphone or tablet device (not included). This allows you to easily monitor your performance stats in real-time or review them later at your convenience. Specification: Material: Polyester Size Chart: S: 80cm-85cm/31.50inch-33.46inchM: 85cm-96cm/33.46inch-37.80inchL: 90cm-100cm/35.43inch-39.37inchXL: 96cm-108cm/37.80inch-42.52inchXXL: 102cm-120cm/40.16inch-47.24inch Package Includes: 1 SetPosition Tracker Vest 1 Piece USB Cable 1 Piece User Manual Note: Please allow slightly errors 1-2cm differences due to manual measurement.