Crazy M Neutron Jacket

The Neutron Jacket is the most protective jacket in the Crazy collection and your perfect solution for mountaineering and truly extreme environments. This product combines great technical performance and full protection with complete elasticity, making it incredibly unique. When it was created in 2013, it was the world’s first fully elastic jacket, a feature that ensures maximum comfort and mobility. This year, it’s back and even more dialed in with its new design.

Both the outer fabric, the insulation, and the lining of the Jkt Neutron are entirely elastic. The outer shell is perfectly waterproof, boasting a 20K mm water column. To guarantee complete waterproofing in the areas most exposed to rain and snow, the seams of the hood are taped, and the shoulders are made from a single, seamless panel. The outer fabric is durable Toray Dermizax nylon.

Insulation is handled by Primaloft Active, which is not only warm and water repellent but also elastic, moving with the rest of the jacket. The combination of high-end materials, 4 way stretch, and a completely taped, waterproof build makes this a high performance shell that allows for unrestricted movement on the hardest pitches and steepest skin tracks.