The shape of concave steel has been designed specifically with the horse and itâ€™s performance and safety in mind. Namely to maximise grip and non-slip, to reduce shoe loss and interference injuries but also to support the hoof, to help with good nailing and wear yet making the shoe relatively light when considering the coverage to the hoof and size of foot. Concave shoes are a very suitable option for sport horses. Owners of eventers, showjumpers and dressage horses should all consider the use of this shoe. Size 2, 133mm (5 1/4â€). Set 4.