ALUMINUM COMFORT An addition to the Comfort series that offers a lighter weight option. Key design features include - rolled toes and branches, steel wear insert, better breakover improves coordination of movement, optimizes balance, less pressure on the tendons. Adequate thickness to provide strength and durability. Built-in sole relief. Shoes are symmetrical. Initial sampling in the market is bringing excellent response. Punched for E-head & Combo. 0 & 1 - E-4 Slim; 2 & 3 - E-5 Slim