A heritage silhouette with elevated style, the Birkenstock Boston SFB clog is the perfect fusion of form, function, and comfort. Crafted from buttery soft suede that hugs like a second skin, it’s designed for all-day wear with the brand’s signature anatomically shaped soft footbed and an EVA sole. The adjustable metal buckle and timeless design make this clog a modern classic built for every season. Suede Uppers, EVA Sole, Suede Lining, Metal Pin Buckle, Slip On, Style Code: 1030870, Birkenstock, Shop All Men's Slip-On Shoes. Birkenstock Men's Boston SFB Basalt Grey. The classic Boston clog by BIRKENSTOCK, designed to wear all year round. The adaptable strap and strong metal buckle, along with classic BRIKENSTOCK shaped cork-latex footbed make these clogs comfortable for all foot types. Get your Sneakers Birkenstock Boston SFB LEVE Basalt Gray Tonal FB EUR 42 for 160 EUR at Footshop. Brand: Birkenstock Colour: Basalt Gray Tonal FB Size: 42