Tucket Footwear Mens Giller Boat Shoes, Cognac/Vanilla, 12 M US EVA upper Microplast sole Marine Grade Construction, the Tucket Giller is designed to fully submerge in water and dry fast. Slip Resistant. Proprietary tread material has passed slip testing for occupational footwear. EVA footbed makes for superior comfort under foot and helps significantly reduce foot fatigue. 12 gills disperse water rapidly. These gills also serve as natural flex points for the shoe.