The Optimum Razor Rugby Boots in this Black with Silver colorway offer a soft, flexible and comfortable fitting rugby boot complete with an ergonomic stud configuration offering durable stability across the heel and forefoot. lightweight, synthetic pro performance PU upper offers a soft, flexible & comfortable fit complete with ergonomic stud configuration offers durable stability across the heel & forefoot UK sizes 1-6 - 6 stud sole, UK sizes 7-13 - 8 stud sole