Perfect mid layer warmth in order to give the best cold weather performance you will find altura thermo technology this uses thermosuede fabrics to deliver body warming insulation and warmth maintaining core thermoregulation keeping you warm dry and comfortable in order to raise your visibility in low light and darkness altura add strategically located retroreflective trims for this jersey altura use their ergofit 3d patterning designed to offer you a garment that fits just right when i