They feature Brooks' GuideRails® Holistic Support System, which helps keep excess movement in check while supporting your body in its natural motion path. The shoes incorporate nitrogen-infused DNA LOFT v3 midsole foam, offering soft, dynamic, and lightweight cushioning. They have a breathable engineered mesh upper for comfort and a secure fit. The redesigned outsole promotes smooth heel-to-toe transitions. SZ 11.5 Great preowned condition Good be cleaned Minor wear on toe Laces need washed or replace