Material - 100 Polyester, high quality Faux Fur fabric and soft Fleece lining Light Up LED - Built-in nice and twinkling sparkling rainbow LEDs, being the Focus of people's attention in the night, fit for Party, Cosplay, Christmas, and any Events Removable Battery - Batteries can be taken off, easily to be removable with a Battery Pack. The Battery Pack is hidden in a secret stash Pocket with Zipper Three Sizes AvailableS,M,L - SLength 25''---Shoulder Width 16.5''---Chest 38''; MLength 27''---Shoulder Width 17''---Chest 42'' LLength 29''---Shoulder Width 19''---Chest 46.5'' Workable Battery: AA, 1.5V, 3pcsnot included battery