Stone Island Ice Jacket Wool Blend in Mustard. Brand new for the A/W 2014 collection, this ice jacket is set to be a must have jacket for any Stone Island jacket enthusiast. This melange looking cloth, made of a mix of wool and polyester yarns, has undergone a thermo-chromatic resin treatment enabling colour changes according to temperature variations. The molecules of the coatings micro-encapsulated pigments modify the passage of light and morph to a darker colour when temperature drops. The garment has been filled with the finest feathers for ultimate warmth and comfort. Other features of the jacket include detachable press stud contrasting hood, full zip fasten, 4 press stud fasten patch pockets, shoulder epaulettes finished with the special black and white removable compass patch logo.