Keep warm and light up your way with this LED light up beanie. Great for outdoor activities including camping or use as a safety light for those late night winter jogs, cycling, etc.. Approximately 15 hrs of light. 120 lumens. 2 x CR2032 batteries included . Approximate circumference: 17.5 x 8"( will stretch to fit most) color: Black Light unit is removable to allow washing of beanie and to replace batteries when needed.