Vigor Grid Fleece Bottom – Women's

Built for cold-weather trail runs, skin tracks, and alpine basecamp mornings, the Vigor Grid Fleece Bottom is our top pick for women who need a hardworking base or mid-layer. Grid-fleece fabric with ActiveTemp technology traps heat when you're standing still and vents fast when you push the pace. Flatlock seams and four-way stretch keep movement unrestricted all day.

• Grid-fleece fabric with ActiveTemp technology regulates warmth and breathability based on your output — stays cozy at rest, dumps heat on the move
• Four-way stretch and flatlock seam construction eliminate restriction and chafing during high-movement days on trail or skin track
• Women's-specific fit with a low-profile elastic waistband layers cleanly under hardshell or technical pants without bunching
• Moisture-wicking, quick-drying construction pulls sweat away from skin fast — critical in Southern winters where cold and humidity hit at the same time
• Secure zippered pocket keeps small essentials — keys, trail card, gels — locked in place without bounce