What are the, shiny X (like clear plastic strips) on some of the football shirts. Mexico last night, Chelsea at Wembly FA Cup. Not on all the shirts just some, or am I'm seeing things
The new Chelsea FC team kit incorporates Adidas TechFit™ technology. The shirts employ TechFit™ PowerWeb, a series of TPU (Thermoplastic Urethane) bands which are pressed onto the base layer of TechFit apparel and anchored at key points to focus on key muscle groups such as the shoulders.