Like new. Lightly used on treadmill only 4 weeks … GEL-KAYANO 28 MK shoe creates a stable stride that moves you towards a balanced mindset. The shoe's MONO-SOCK construction comfortably wraps your foot for improved support. To improve stability and responsiveness, we added FLYTEFOAM Blast cushioning to the midsole. It provides a smooth and supportive feel in each step. The trainer's new GEL technology shape delivers a smooth stride, allowing you to experience a softer landing without losing speed.