Boost your brand when you give out this water bottle to customers!EL Wire Shutters Glasses,fashion led product.Eco-friendly material,non-toxic, non-flammable,non-radioactive,pure warm light,romantic decoration.These novelty flashing style sunglasses are really cool,entire transparent frame,clear lens, charming led light,make you stand out at night.Flashing modes: constant on,slow flashing,quick flashing.Powered by 2 AA batteries(not includes).Use for bar,patty,festival,dancing hall.Customize with your company logo for a great brand publicity.