The Crazy Pull Neutron stands at the pinnacle of technical midlayer design—an uncompromising blend of warmth, breathability, and elasticity wrapped in a sleek, aggressive silhouette. Built for high-altitude environments and demanding mountain pursuits, this hybrid pullover delivers exceptional thermal efficiency without excess bulk.

At its core is Polartec® Thermal Pro®, a fleece renowned for offering one of the best warmth-to-volume ratios on the market, trapping heat efficiently while remaining light and compressible. To enhance mobility and breathability, Crazy integrates Sorona® fabric across the back, sleeves, and side panels. Its three-dimensional ribbed structure promotes airflow, stretch, and rapid moisture transfer, ensuring comfort during both high-output ascents and colder, exposed moments.

Designed to function as a standalone outer layer in cold, calm conditions or as a powerful insulating midlayer under a shell, the Pull Neutron delivers reliable warmth exactly where you need it—without compromise. Compact, technical, and unmistakably Crazy in style, it’s a precision tool for serious mountain athletes.

Features

• Hybrid construction optimized for warmth, breathability, and stretch

• Polartec® Thermal Pro® fleece for maximum insulation with minimal bulk

• Sorona® stretch fabric panels for enhanced airflow and freedom of movement

• High-performance design suitable for outer or midlayer use

• Compact, lightweight structure ideal for alpine layering systems

• Full front zipper for precise ventilation control

• Two hand pockets for warmth and essential storage

• Laser-cut, bonded chest pocket for secure, low-profile storage

• Integrated ARTVA pocket for ski mountaineering safety equipment

• Ergonomic hood with pre-folded edge for a close, protective fit

• Flatlock stitching with contrasting color to reduce chafing and add durability

• Reflective logos for improved visibility in low-light conditions

Specifications

• Garment Type: Technical hybrid midlayer / lightweight outer layer

• Primary Fabric: Polartec® Thermal Pro® fleece

• Secondary Fabric: Sorona® stretch fabric (back, sleeves, sides)

• Construction: Hybrid fleece with targeted stretch and breathability zones

• Fit: Athletic / performance fit

• Closure: Full front zipper

• Pockets: 2 hand pockets, 1 bonded chest pocket, ARTVA pocket

• Intended Use: Ski mountaineering, high-altitude mountaineering, cold-weather alpine activities