Boys Clarks Formal/School Shoes Scala Loop - G Fit. Brand: Clarks. Fastening: Lace Up. Width Fitting: F. Upper Material: Leather. If you’re after a smarter fit for your son’s school shoes, the Clarks Scala Loop are a great choice. The minimalist style offers comfort and flexibility with its lightweight rubber sole thanks to the flex groves. Simple and breathable leather uppers is sometimes all you need for the perfect school shoes. Uppers: Leather. Lining: Textile. Fastening: Lace. Fitting: F (standard) G (wide). Trim: Eyelet. Manufacturer Code: SCALA LOOP Y.