The Adidas Solar Boost ST has energized cushioning that works with a flexible outsole to deliver a smooth and comfortable ride but also provides a stable platform for runners that need it. The dual-density Boost cushioning provides medial support while the Solar Propulsion Rails adds additional support to guide the foot through toe off! The breathable upper is designed to support and stretch as you move for an optimal fit. Go the extra mile in the Adidas Solar Boost ST, a stable shoe for overpronating runners looking for comfort from the Boost cushioning with an energized feel for those long runs. The Stretchweb outsole made of Continental™ Rubber will provide superior traction and durability.