Women's Mount to Coast C1 - Ultraviolet More cushioning, more fun. This super trainer features a dual-layer midsole that combines our responsive CircleCELL foam with a rubberized support layer for consistent comfort and performance. Up top, the TUNEDFIT Dual Lacing System delivers customizable fit for the longest training days. DETAILS: Dual-layer midsole design: top layer CircleCELL foam delivers uncompromised performance, crafted from sustainable materials, while the rubberized EVA bottom layer provides support and stability. TUNEDFIT Dual Lacing System for separate lace adjustment. Wider base and higher sidewalls enhance stability during long runs. Recognized with APMA Seal of Acceptance for promoting good foot health