Lightweight protection for fast-moving mountain days

The Mountain Equipment Aerotherm Women's Vest is built with EXOLITE 45 double weave soft shell fabric (45g m⁻²) and a moisture-wicking micro-grid lining to provide wind resistance, breathability and rapid drying performance. Designed for hikers, mountain runners and mountaineers, it helps regulate temperature during sustained uphill efforts while adding core warmth on exposed ridgelines and summits. No verified temperature threshold was supplied by the manufacturer.

Performance & Engineering

• Ultralight EXOLITE Soft Shell Fabric: Engineered with EXOLITE 45 double weave soft shell (45g m⁻²) to provide wind resistance, stretch and durability while maintaining a lightweight feel for fast-paced mountain movement.

• Micro-Grid Moisture Management: Built with a moisture-wicking micro-grid lining that helps regulate body temperature and improves next-to-skin comfort during high-output activities and changing weather conditions.

• Active Mountain Fit: Designed with an Active Fit that minimises excess fabric and allows unrestricted mobility when hiking, running, climbing or wearing a pack.

• Packable Performance Design: Packs into its own hand pocket with twin karabiner carry loops, making it easy to store in a backpack or attach to a harness when conditions improve.

• Draft-Blocking Comfort: Semi-elasticated armholes and hem help reduce heat loss and prevent cold air ingress on exposed mountain terrain.

Technical Specifications

• Ideal For: Mountain Walking & Trekking, Mountain Running, Mountaineering
• Main Fabric: EXOLITE 45 double weave soft shell fabric (45g m⁻²) with moisture-wicking micro-grid lining
• Weight: 180g / 6.3oz
• Hardware: YKK® moulded centre front zip
• Pockets / Features: 2 zipped hand pockets, 1 zipped chest pocket, packs into hand pocket with twin karabiner carry loops, semi-elasticated armholes, semi-elasticated hem, designed and developed in the UK, Product Lifetime Guarantee
• Fit: Active Fit

Care & Longevity

Machine wash at 30°C and line dry to maintain fabric performance and moisture-management properties. Store in a cool, dry place away from direct sunlight. Always follow the garment care label and manufacturer guidance for best long-term performance.