Robust, insulating mid layer jacket, also suitable for wear as an outer garment the caribou altis is a Zip-In fleece jacket from our popular caribou range. It is equipped with a regular system zip for easy docking with a compatible outer jacket. It has a knitted look exterior and a soft, brushed reverse side that keeps you nice and warm. Fabric Type: Main; Fabric: NANUK 200% BIPOLAR JERSEY 100% Polyester.