adidas Springblade Solyce Running Shoes Mesh Upper - Creates unbeatable breathability. Speed Lacing Construction - Offers a snug, lock down fit and convenient lacing. Synthetic Overlays - Offers additional support around the foot. Springblade Midsole - Unique midsole made up of 16 individual blades to provide maximum energy return. Adiwear Outsole - Incredibly durable and abrasion resistant rubber.