The Defier RS® has been designed to meet the highest demands of the intense competitive player seeking stability and durability. The outsole is made of Aösta® 7.0 rubber for durability, combined with Drag Guard™ abrasion-resistant wear zones in the forefoot and heel areas. Stability during foot transitions is ensured by the Cushion Board™ concept under the midfoot area. The Shock Spring® technology provides cushioning and comfort.