We proved that these shoes are truly waterproof by completely submerging them in 3" of water. After 30 minutes, not a trace of moisture had penetrated to these slip-on shoes' interior, while other pairs we tested were left with pools of standing water inside. From Merrell, leaders in outdoor footwear, these waterproof shoes quickly proved themselves superior in comfort, traction, and water repellency when our analysts examined them against four competitors. In addition to its water impermeability, the pigskin suede upper resists stains and is lined with 200 grams of Thinsulate insulation that's 1 1/2 times warmer than down. The 4 1/2-mm EVA footframe (designed to be gender-specific for the differing foot structures of men and women) and the air-cushioned mid-sole of these shoes earned a best rating for comfort. This pair also ranked highest in traction, thanks to the patented rubber sole and the 1/4" treads, the deepest and most defined treads of all shoes we tested (one competitor's treads were only 1/32" deep, causing our analyst to slip on a ceramic tile floor). With a neoprene collar that keeps out debris and water. Gray. Men's sizes 11 1/2.