Trainer for boys with lights built into the sole for a touch of magical energy as they walk. Trainer for boys with lights built into the sole for a touch of magical energy as they walk. This version boasts an upper made from nylon and a leather-effect material in a black-and-red colourway and is the product of the partnership between Geox and Harry Potter. Buzzerlight is the perfect way to round off athleisurewear with a touch of the magical world of Hogwarts. Colour: black