Mizuno Breath Thermo Running Tights - AW14 Breath Thermo Fabric Insertion at the Knees - Incredibly lightweight and resilient fabric that converts moisture to heat to keep you warm extending your running season. Dynamotion Fit - Enhanced Fit Technology that provide an optimal fit and moves with where ever your body goes. Breath Thermo Yarn - Captures escaping body heat and through a patented physical reaction in the yarn, generates heat  warming the body. BlindStitch - For anti-abrasion and enhanced comfort. Reflective Logo and Accents - Located on the front and back, ensuring you remain visible in low light conditions.