ultimate protection and comfort for high-altitude adventures. the high altitude 20k jacket offers top-tier protection against extreme weather conditions with its 20k dryflight® technology, providing exceptional waterproofing. designed with warmflight® x1 technology, this jacket ensures ultra-lightweight, breathable warmth, making it perfect for intense activities in cold environments. the relaxed, boxy fit with drop shoulders offers maximum comfort and style, allowing for unrestricted movement.eco-friendly and functional designmade with 43% recycled polyester fibers from plastic bottles, the high altitude 20k jacket is not only high-performing but also environmentally conscious. the shell fabric, composed of recycled polyester, ensures durability and longevity. this jacket is a reliable choice for outdoor enthusiasts looking for sustainable gear that doesn’t compromise on performance.