Lightweight Warmth for Alpine Layers

When the climb starts early and conditions keep changing, the Rab Ascendor Light Fleece Pull-Over is the kind of layer you’ll keep within reach. Designed for year-round climbing, mountaineering, and ski touring, this lightweight performance fleece provides just the right balance of warmth, breathability, and stretch—so you can keep moving comfortably through shifting mountain conditions.

Built with Thermic™ S fleece, this women’s technical midlayer features a striped fleece backer with alternating high and low loft sections that trap warmth while allowing heat and moisture to escape. The slim fit sits close to the body for easy layering under a shell, while the half-zip design lets you quickly vent heat when the pace picks up. With a longer dropped hem for added coverage and low-bulk flatlock seams, it’s designed for comfort whether you’re wearing a harness, pack, or outer shell.

Ideal For

• Climbing & mountaineering
• Backcountry skiing & alpine touring
  
• Cold-weather layering on the trail

Why You’ll Love It

• Breathable Thermic™ S Fleece – Lightweight fleece with alternating lofted stripes helps regulate temperature while wicking moisture and drying quickly.

• Layer-Friendly Slim Fit – Streamlined fit sits close to the body for efficient layering under shells or insulated jackets.

• Ventilation When You Need It – Half-zip front allows quick airflow during intense climbs or uphill pushes.

• Comfort That Moves With You – Stretch fabric and flatlock seams reduce bulk and maximize mobility for technical terrain.

• Secure Alpine Storage – Matrix™ stretch woven chest pocket with a YKK® zip keeps small essentials safe.

Fabric & Fit Details

• Material: 94% recycled polyester / 6% elastane Thermic™ S fleece

• Panels: 88% recycled nylon / 12% elastane

• Fit: Slim fit with dropped hem for added coverage

• Weight: 7.3 oz

• Center Back Length (Size S): 25.2 in

• Features: Elastic-bound cuffs and hem, YKK® chest pocket zipper.