LIGHT WEIGHT INSULATION WITH A 1/2 ZIP TO HELP YOU COOL DOWN DURING THE WARMER DAYS AND STAY WARM WHEN IT S NEEDED Helly Hansen Womens Lifa reg Active is a performance baselayer delivering superior moisture management and light weight insulation for all year activities HH LIFA reg Mid is an advanced two layer construction with 100 Lifa fibre next to skin and wicking technical fibres outside All in all an unbeatable combination for moisture management light weight warmth and all day comfort