Tubolight Diamana HD 29 is a high-end MTB tire insert designed to offer maximum rim protection, riding comfort, and superior performance on the most demanding terrain. Developed and tested with the support of World Cup athletes, it combines the classic functions of a mousse with an innovative closed-cell EVA structure that is resistant, durable, and does not absorb sealant. The special geometry with side channels utilizes the Venturi effect to manage airflow inside the tire, reducing rolling resistance by up to 9% on rough terrain and improving overall speed, even uphill. The tire's footprint ...