Size 11, Black, Muck Muckmaster, High Plain Toe, 100% Waterproof Boots, Rubber Sole, Heel Measures Approximately 2" Platform Measures Approximately 1", Boot Opening Measures Approximately 1"4" Around, 5 mm Neoprene Provides Comfort & Flexibility, Along With Excellent Waterproofing, Shock Absorption & Heat Retention Properties, Adjusts To Your Foot Shape To Resist Blisters & Chafing.