Co-created with KITH, the GEL-KAYANOâ„ 12.1 sneaker combines iconic design details from the version that launched in 2006 and combines them with a modern tooling system. This design's upper was inspired by European gothic armor and it's structural, metallic properties. Meanwhile, its open mesh underlays help improve airflow to keep feet cool. The midsole features the same tooling system from the GEL-NIMBUSâ„ 17 shoe. It was originally engineered for comfort during the duration of marathons, featuring dual GELâ„ technology inserts and a FLUIDRIDEâ„ cushioning structure. Co-created with KITH Inspired by the GEL-KAYANOâ„ 12 running shoe from 2006 Breathable mesh underlays GEL-NIMBUSâ„17 tooling system FLUIDRIDEâ„ technology Helps create a smooth feel underfoot Rearfoot and forefoot GELâ„ technology Improves impact absorption Dope dyed recycled sockliner mesh