ONLY 20 AVAILABLE—we designed and produced a small amount of these St. Paddy's Day Fort Knocks to top off whatever shamrock shenanigans you plan on getting into this year. Don't test your luck, wait too long and they'll be gone! 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 gold bar and gold Knockaround logo detailing with hidden spring hinges. These high quality, form-fitting sunglasses make for a comfortable and durable fit. Dark Olive Ice frames Polarized Green moonshine mirrored lenses Gold hardware UV400 protection FDA approved, impact resistant lenses with laser etch logo detail Protective pouch included