The Spider features street casual styling and a TERRA removable insole. It has a Terra single density contoured PU insole with CleanFeet® treated topcloth. The moisture wicking PK mesh lining is treated with CleanFeet® odor management technology. There's a lightweight composite toe and flexible composite plate. It's electric shock resistant. The laces are manufactured using an interlocking weave, which produces an extremely strong bodied lace with breaking strength in excess of 66 kilos. There's a direct injected single density polyurethane mid-sole and outsole. Excellent blunt abrassion and slip resistance, the Spider is designed for superior comfort across a wide variety of surfaces.