"What Our Gearhead® Experts Are Saying: ""I’ve put serious miles into the S/Lab Ultra Glide 1. 5—trail ultras, long training days, you name it—and the ride is unbelievably smooth. The pressure-diffusing sole makes a big difference in reducing fatigue, and the new optiFOAM+ has that springy bounce that keeps you going."" From first mile to final climb, the Salomon S/Lab Ultra Glide 1. 5 Trail Running Shoe is designed to make every step feel smoother, lighter, and more responsive. Built for endurance runners tackling varied terrain, this shoe blends high-cushion comfort with stable performance so you can move confidently over distance without sacrificing speed. The Relieve Sphere outsole disperses impact with a wave-like geometry that minimizes foot fatigue, while All Terrain Contagrip® rubber grips everything from slick rock to loose gravel. Underfoot, a dual-layer midsole combines Salomon’s lightweight optiFOAM and ultra-responsive optiFOAM+ to deliver cushioning that adapts to your stride and the trail ahead. Paired with the secure fit of the Quicklace® system, the Ultra Glide 1. 5 helps you stay locked in, comfortable, and focused on the finish line."