Brooks Glycerin GTS 21 Men's Black Ebony Casual Running Shoes Size 11M-New, engineered warp knit upper is breathable and allows for a flexible, accommodating fit while staying soft against your foot-GuideRails holistic support system supports your body in its natural motion path while keeping excess movement in check-Made with recycled materials equivalent to 5 plastic water bottles-Additional 2mm of DNA LOFT v3 midsole for a plush ride-Super-soft, nitrogen-infused DNA LOFT v3 cushioning is optimized to be lightweight, responsive, and durable for plush comfort-New RoadTack rubber includes recycled silica and is lightweight and durableExcellent pre-owned condition, nice and clean.