The Bolt is one of Fourlaps' best-selling and most loved shorts. Inside Hook named them the best athletic short with a built-in liner in 2019, and Runner's World picked them as a favorite running short-no surprise, since they engineered the Bolt to be the perfect hybrid between running and training wear. 4-way stretch fabric flexes with you as you move, laser-cut ventilation holes along the legs help you stay cool, and a zippered back pocket locks down your valuables.