Selected for you!
X-Bionic Energy Accumulator long sleeve top for sport in winter - converts perspiration into energy, enhanced performance without doping. This highly-technical garment keeps you cool when perspiring, keeps you warm when you are cold. Dries, cools and warms where it should all this by the 3D-BionicSphere system incorporated within the fibres of the garment. This system retains important resources to keep you performing better as less energy is burned in regulating body heat leaving you more energy reserves for training/participation. Will definitely give you an edge over your competitors, ideal for all winter sports, biking, running, climbing etc. Fantastic.
don't just take our word for it, 29 National ski teams rely on X-bionic garments, winner of many, many international awards for outstanding design, quality and workmanship.