100% Polyester This is a warm Puma junior windbreaker jacket. It has a sturdy fabric, but is made of lightweight material for a soft feel. The lining is tricot material with a slight brushed finish for warmth. There are pockets on both sides. The hood is removable. It's light, easy to move in, and has a warm feel. Worn a few times. Please understand that it has been stored at home before purchasing.