"What Our Gearhead® Experts Are Saying:""I have been racing and training in the Spin ST Shoe on technical muddy trails and the Vibram Megagrip outsole with 7mm Traction Lug geometry bites into soft ground better than anything else I have run in at this weight. The NBS lace system locks the foot in at the exact tension I want and stays there through the whole run without needing to stop and readjust mid-race.""The starting line is muddy, the course is technical, and the only thing standing between you and a fast time is traction. The Scarpa Spin ST Shoe was built from the ground up for exactly that scenario, prioritizing grip, lightness, and a precise fit that wraps the foot without constriction on short-distance technical terrain where every second and every footstep counts. Scarpa engineered the Spin ST around a Fixion ST outsole built on Vibram Megagrip rubber with Traction Lug technology and 7mm lug geometry that bites into soft and muddy ground with authority and releases cleanly for efficient forward movement. The breathable abrasion-resistant upper with a high collar protects the ankle from impact without adding bulk or weight, and the NBS New Lace System allows you to dial in and lock tension at exactly the right point before the gun goes off and keep it there through the finish line. At 260 grams, the Spin ST disappears on your foot, leaving nothing between you and the terrain but grip and momentum."