The Caldera 4 features our lightweight BioMoGo DNA midsole that is stacked high to promote a steady stride over long distances while protecting against trail hazards. The thick midsole and outsole work together by including large grooves to respond and adapt to changing terrain while sustaining comfort. The TrailTack sticky rubber outsole and high surface-area lugs provide outstanding uphill and downhill traction — including on wet surfaces.
We updated the midsole by using the BioMoGo DNA cushioning. We improved the upper material by using a lightweight engineered mesh that applies strategic stretch and structure for fit, plus ventilation and drainage. We integrated a mud-guard and TPU toe cap to enhance protection and durability in high abrasion zones. There are front and back attachment points for easy-secured gaiters. Plus the lace keeper stows away the laces out of the way!