When we see Birkenstock’s Bostons hit new in, we don’t hang around. The comfort-first slip-on style is arguably the most comfortable clog in the footgear game thanks to its anatomically shaped cork-latex suede footbed and EVA sole. Above are woven felt wool uppers which fit snug to the foot with an adjustable buckled strap. Wool Felt Uppers, Suede Lining, EVA Sole, Cork-Latex Footbed, Adjustable Buckle, Made in Germany. This version of the Boston clog, a classic BIRKENSTOCK model, comes with a shaft in soft, high-quality woolen felt. The clog can be adapted to all feet thanks to a strap on the upper edge of the shaft and a sturdy metal buckle. Anatomically shaped cork-latex footbed. Upper: wool felt. Lining: suede. Sole: EVA. Details: individually adjustable metal pin buckle. “Made in Germany”. Insole: Suede. The flexible leather lining, which is gentle on the skin, nestles up softly against your foot and adjusts to its contour. The open-pored and thus very breathable surface makes for a comfortable foot climate, even during more strenuous physical activity. Footbed material: Cork. Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning. Outsole: EVA. EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned.