Handsewn with durable, waterproof leathers our Gibraltar Boot is ruggedly handsome with impressive comfort and durability Sebago demands. Handsewn Blucher Moccasin Construction wraps your foot in one continuous piece of leather creating seamless comfort and extended durability. Premium, Rich, Full Grain, Waterproof Leathers for durable protection. Leather Rawhide Laces. EVA Heel Cup and Steel Shank provide added support and stability.