SG Footwear has bought the Rugged Shark brand from Gordon Brothers on undisclosed terms. Rugged Shark is an American marine and fishing footwear brand geared toward men aged 25 to 55. The deal includes all assets, trademarks, registrations and patents, including the Shark Aquaire system, which expels water so the footbed dries quickly, and the Shark Grip, a non-slip bottom with rubber traction. Rugged Shark was founded in 2001.