Base London Carnoustie A Base London signature style, Carnoustie is a men's leather slip on formal shoe. It's a shoe that will stand the test of time and a reliable shoe that will go with any outfit. Fastening:Slip on Material Composition:Leather/Textile/Other Materials Square Toe. High quality leather lining. Base London Design Sock. Upper Stitch detailing. High quality waxy leather with deep shine. Rubber outsole with studded pad tread.