CPV code 18812100 designates Sandals with uppers of rubber or plastics in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
18812100 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 18812000 (Footwear with rubber or plastic parts).