Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
O.3.6.1.2.4 Base layers come in different thicknesses or densities, giving varying amounts of insulation. Usually the thicker the fabric, the better the insulation and the warmer the garment is. In choosing the base layer, the type of activity to be undertaken needs to be considered. For example, if the work planned in cold conditions is likely to be very physical, a thinner base layer may be more appropriate than one chosen for less active work in those conditions.