Our Knockaround Fort Knocks embody the classic design, strength, and color that has become synonymous with Knockaround sunglasses. Inspired by the United States Bullion Depository in Fort Knox, Kentucky, the injection-molded frames feature recessed gunmetal bar and gunmetal Knockaround logo detailing with hidden spring hinges. These high quality, form-fitting sunglasses make for a comfortable and durable fit. Dark green fronts Matte white right arm Red left arm Polarized amber lenses Gold hardware UV400 protection FDA approved, impact resistant lenses with laser etch logo detail Protective pouch included