30K waterproof, fully seam sealed, and lightly insulated with SPACE HEATER™ smart liner technology. SPACE HEATER™ features zonal use of PrimaLoft® insulation, space mesh, and Air Tech 3D™ micro fleece to optimize both breathability and heating efficiency. Main body, arms, and hood have 60/40g zonal PrimaLoft® recycled insulation, with 100g in kidney area. Both shell and insulation are 100% recycle