Using ODLO\'s WARM technology, the top bounces your body heat right back to you in chilly weather, but gets ventilation zones to let your skin come up for air too. It\'s even made using a blend of recycled materials for great sustainable quality.Baselayer topLong sleevesMade using recycled materialsSeamless ConstructionOdlo Warm TechnologyVentilation zones Full Moisture ManagementLaser Precision Cut Design360° motion for maximum freedom of movementHi-Tech Thermo RegulationFabric: 59% polyamide (recycled), 26% Polyester (recycled), 7% Polyamide, 4% Elastane, 4% elastane (recycled)Colour: Grey