The True Motion Solo has been designed to feel very fast, with excellent energy efficiency and rebound, with a propulsion from an inbuilt fiberglass-nylon plate. True Motion have chosen a last that gives you a snug, secure 2nd-skin like fit and with all True Motion running shoes, the unique U-TECH cushioning formed of two "U-shape" pieces of cushion and propel you forwards. True Motion describe the Solo as: "Midfoot, forefoot, or rearfoot strikers – all runners who want to step on the gas have one thing in common: they touch the ground farther at the front of the sole. This is exactly where we placed a new version of our unique U-TECHTM technology, Double U. Inspired by the natural motion you sink into the twofold U-shaped construction. U-TECHTM surrounds your foot, centers forces and thus provides you with support and physiological assurance. Like a trampoline, it catapults you forward into the next step. A newly designed last ensures a performance fit that surrounds your foot like a second skin. Our newly developed Speed MotionBridge, a fiberglass-nylon plate which was incorporated into the midsole, provides added stability, reduced weight, and a dynamic and explosive push-off. The U-TECH Solo is through and through pure innovation that you will hopefully love as much as we do. A true whirlwind!" USE: Faster runs, long and short distances on mainly firm surfaces RUNNER PROFILE For all runners who want to run faster as well as for forefoot and midfoot strikers. If you get tired or run more slowly, the U in the heel securely centers your stride. On fast-paced runs, the U-TECH Solo develops its full potential. The twofold catapult effect occurs in the center of the shoe, and due to the U-shaped construction the physiological, healthy centering takes place at the exact right spot as well. That way, efficiency and performance are increased while a potential overload for the runner is being avoided. DOUBLE U-TECH™