Astral Men's Loyak Outdoor Shoe for Water, Casual, Boat, and Travel The Loyak is a high-performance shoe that's durable, grippy, and comfortable on water and land. The outsole is made with Flex-Grip super flexible rubber with drainage holes, razor siping, and 3 mm lugs. The uppers are made of durable, hydrophobic canvas with stretchy Airmesh at the vamp and tongue. Features two sets of flat, water-resistant laces and an EVA foam midsole. Weighs 180 g and fits true to size.