Good looking, ready for anything, and always up for an adventure. If its possible for sunglasses to be a persons kindred spirit, these polarized shades are the primary candidate. Our Kindred Spirit Fort Knocks are timeless, with a form-fitting shape, comfortable navy blue frames, and impact resistant sky blue lenses. Fort Knocks may be the brawn, but theyre also the brains, since in addition to being tough as nails, they also feature full UV400 protection.