X-bionic Neckwarmer 4.0 Black

THE PATENTED AND AWARD-WINNING 3D BIONIC SPHERE® SYSTEM WITH THERMOSYPHON® TECHNOLOGY. Features complex 3D structures of internal and external air channels. Cools you when you sweat, warms you when you are cold.

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

100% PURE SWISS ENGINEERED. Made in Italy. Over 700 international awards and test wins for revolutionary features and designs. More than 800 patents registered for a unique technology.