• RADIACTOR 4.0. PERFECT COMPANION IN EXTREME COLD. Lighter decision layer with shorter drying time, highest cooling and heat capacity, reduced volume and many high-tech functions.

  • ONLY WITH X-BIONIC® 4.0: INNOVATIVE RETINA® ULTRA-HIGH-DEFINITION TECHNOLOGY. Provides ultra-high definition texture, ultra-high density function transmission and ultra-high precision body zoning.

  • AWARD-WINNING, PATENTED 3D BIONIC SPHERE® SYSTEM WITH THERMOSYPHON® TECHNOLOGY. Features complex 3D structures of inner and outer air channels. It cools when you sweat and warms when you are cold.

  • IDEO-WAISTBAND IDEALLY DESIGNED, ERGONOMICALLY OPTIMIZED. With a higher cut line in the back area keeps the garment in place even with constant movement.

  • 100% PURE SWISS ENGINEERED. Made in Italy. 700+ international awards and test wins, 800+ patent registrations for the products with the "X".

Trust the outstanding thermoregulating effect of X-BIONIC® RADIACTOR 4.0 PANTS MEN even in extreme cold, while enjoying the incomparable comfort of a super-light fabric. The new 4.0 generation is the first to feature the Retina® ultra-high definition quality for unique accuracy of functionality. The result is an ultra-dense knitted material with a reduced volume that offers full functionality at a pleasantly low weight. Functional zones with thermoregulating and protective effects are positioned precisely and promote your performance and endurance.

The material owes its powerful temperature control effect on cold winter days to XITANIT® 2.0, an even more perfected, heat-reflecting high-tech fiber.

The legendary patented 3D Bionic Sphere® System with ThermoSyphon® technology is more powerful than ever and additionally supports the highly adaptive thermoregulation: complex 3D structures and Y-shaped elements maximize air exchange, cool when you sweat, and warm when you freeze - now even faster and more efficiently than ever before.

X-BIONIC® Partialkompression® uses targeted compression to stimulate muscle function, increase your performance and shorten recovery times. Expansion Ribs® cushion the joints at the elbows and knees providing a warming effect even when the joints are in motion.