The Bolt is one of our best-selling and most loved shorts. Inside Hook named it the best athletic short with a built-in liner in 2019, and Runner’s World picked it as a favorite running short—no surprise, since we engineered the Bolt to be the perfect hybrid short for running and training.
7” inseam hits lower thigh
84% Polyester, 16% Spandex
Quick dry, 4-way stretch fabric
Wicking boxer brief liner
Rear zipper pocket can hold all major cell phone model sizes
Elastic waist and drawstring
Reflective “4” signature logo on back
Model is 6'1", a 32" waist and is wearing a size Medium
Your standard pant size
“The perfect summer shorts don't exi—actually, friends, they do.”
“Unbelievably comfortable, lightweight, and made with ultra-high stretch for full range of motion.”
“Fourlaps’ proprietary 37.5 technology is able to vent heat in warm conditions and retain heat when it’s cold.”
What makes these special?
Made with 37.5 Performance Enhancing Materials
37.5® Technology helps keep your body at the ideal core temperature of 37.5° Celsius and helps keep the microclimate next to your skin at the ideal relative humidity of 37.5%. When you’re hot, patented active particles embedded in the material remove sweat in the vapor stage before liquid sweat forms, cooling you down. When you’re cold, those same active particles trap your energy to help warm you up.
4.7Based on 161 Reviews
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