Achieve the perfect temperature balance with this short sleeve Michigan State Hot Jacket from Nike. The polyester construction traps just enough heat to keep you warm, while the short sleeves and ventilation panels ensure you wonâ€™t overheat. Hidden zippered stash pocket inside the front pouch pocket. Silicon print Helmet logo patch is zig-zag stitched down for a classic look. 100% polyester. Officially licensed product. Imported.