This technical three-in-one jacket has a waterproof breathable DryVent™ 2.5L shell and removable Thermoball™ - insulated liner jacket. The North face are taking the 3 in 1 to the next level by incorporating a Thermoball inner jacket to the proceedings instead of a standard midweight fleece jacket. This enables the wearer to adapt the 3 in 1 jacket to the conditions whatever the weather is doing.
The outer jacket is completely waterproof and breathable using The North Face's DryVent membrane and has a fully adjustable hood, pit zips to regulate temperature, chest and zipped hand pockets. The inner is a zip in Thermoball jacket filled with synthetic insulation throughout the body and Primaloft on the sleeves and collar. These two jackets can be worn together or separate giving you the best chance of keeping snug and warm when temperatures plummet.