The UYN Free Flow shoe is designed with a dual-layer system: merino wool on the inside and perforated technical mesh on the outside. This construction makes the shoe a highly breathable natural thermoregulator. The U-Control sole absorbs impact forces during running, supported by EVA material and the structure of the entire midsole. While maintaining flexibility and reactivity, the low-abrasion rubber U-shaped elements on the sole reduce road impact. Complete control with every step. Composition: 100% fabric.