Treat yourself to carefree winter sports days with the whole family. The X-BIONIC® INVENT® 4.0 PANTS JUNIOR provide reliable warmth protection for young athletes on any terrain. The new 4.0 generation is the first to offer Retina® Ultra-High-Definition quality for unique functional accuracy. The functional underwear features excellent insulation properties due to its brushed inner surface, is made from skin-friendly material, and allows unrestricted freedom of movement. The 3D Bionic Sphere® System ensures optimal thermoregulation of the chest and back with proven effectiveness. Sweat Traps® prevent sweat channels and further enhance the cooling effect. The Expansion Knee at the knee joint offers optimal climate comfort and allows unrestricted freedom of movement.