On Running 3" Core Shorts – Women's insulation When the forecast turns unpredictable

When the forecast turns unpredictable on the trail or in town

Built for cold-weather work and outdoor use

Seamless toe construction reduces friction and hotspots on longer miles

performance and style you need for days that start at the trailhead and end at the tap room

Available in Alloy/Black — a clean

On Running 3" Core Shorts – Women's insulation When the forecast turns unpredictableBuilt for daily training and high output days, the 3" Core Shorts are our pick for women who want reliable, no distraction run shorts in Southern heat. Lightweight, quick dry fabric moves moisture fast, and the built in liner means one less layer to think about. A waistband key pocket handles the essentials on out and back routes. Lightweight, quick dry fabric pulls sweat away fast built for heat and humidity 3 inch inseam gives full stride freedom