The Women's Alt_Road Thermal Vest from MAAP has been crafted using body mapping technology and a Polartec Alpha body lining. This zip through vest delivers superior thermal regulation, in a windproof and lightweight outer layer. Article Fit & Features Material: Alpha insulation 100% Polyester, 100% Polyamide Outer Fit: Regular, true to size. We recommend taking your usual size. External windproof fabric with DWR coating Internal exposed Polartec Alpha body lining Perforated breathable side body panels Breathable comfort stretch back body panel Stretch ripstop Cordura back pocket with an elasticated edge Back zipper stash pocket Reflective external back patch Reflective external branding Internal back hem elastic with silicone gripper YKK centre front and back pocket zippers Product SKU: MAP-WAV064-MRS Alt_Road Thermal Vest - Mars Red