stngr alpine unbreakable sport sunglasses for men - polarized shatterproof ballistic rated lenses with 100% uv protection and flexible indestructible frame (smoke) stngr the alpine men's ballistic sunglasses are built to be virtually unbreakable. durable, scratch resistant lenses with 100% uv protection and a rugged frame make these perfect for use as tactical, police or shooting glasses or for use in fishing, mountain biking, hunting or outdoor environments.