Mizuno Timaru Mid SI Rubgy Boots Full Grain Leather Upper - Very durable and offers great protection as well as comfort. Protective Hard Toe - Ideal protection for scrums and preventing damage to the forefoot. Screw In Studs - Replaceable studs, screw in tight for optimal traction. Removable Sockliner - Removable insole which offers improved comfort. Pebax Outsole - Lightweight, flexible outsole, which also offers great mid-foot strength.