The Caldera 4 is all about long distance, and the further you run the more likely you are going to run on different terrains. So the Caldera 4 uses Brooks’ TrailTack sticky rubber. The high surface-area lugs provide outstanding uphill and downhill traction — including on wet surfaces.
The lightweight BioMoGo DNA midsole foam is stacked high to promote a steady stride over long distances while protecting against trail hazards. Whilst the 4 mm offset keeps you stable over rough ground. New for the Caldera 4 a thicker midsole works with the reconfigured outsole’s large grooves to respond and adapt to changing terrain while providing comfort.
A lightweight, durable engineered mesh upper provides ventilation and drainage; Built-in strategic stretch and structure ensure an impeccable fit. The lace keeper stows laces away, preventing snags on branches or trail brush. And the integrated gaiter tab at the heel secures gaiters with a hook and loop.
Weight (size 6) 283 G